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Sample search results for: a2 catalyzed acidolysis

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1 Mechanistic Studies of the Acidolysis Reactions Occurring in Silicon-Containing Bilayer Photoresists
 

Summary:  Mechanistic Studies of the Acidolysis Reactions Occurring in Silicon-Containing Bilayer... film, the acidolysis reactions of the 2-[tris(trimethylsilyl)silyl]ethyl moiety have been studied... in solution. Acid-catalyzed cleavage of the model 2-trimethylsilylethyl acetate in solution proceeds via

  

Source: Zharov, Ilya - Department of Chemistry, University of Utah

 

Collection: Chemistry

 
2 Enantioselective Rh-Catalyzed Hydrogenation of N-Formyl
 

Summary:  in the presence of a catalytic amount of Lewis acid. One of the examples reported in the original work,45a 2... Chapter 3 Enantioselective Rh-Catalyzed Hydrogenation of N-Formyl -Dehydroamino Esters... with Monodentate Phosphoramidite Ligands Enantioselectivities up to 99% ee were achieved in the ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
3 Solid-phase synthesis of cyclic peptide chitinase inhibitors: SAR of the argifin scaffold
 

Summary:  . Reagents and conditions: a) 2-Chlorotrityl chloride polystyrene resin, DIPEA, DCM, 60 min; b) Fmoc SPPS; c... deprotection is circumvented by the use of a novel aqueous acidolysis procedure. The flexibility... -products (see ESI). That these products were generated only upon acidolysis and not by ...

  

Source: van Aalten, Daan - Division of Biological Chemistry and Molecular Microbiology, University of Dundee

 

Collection: Biology and Medicine

 
4 Rhenium-Catalyzed Aromatic Propargylation
 

Summary:  Rhenium-Catalyzed Aromatic Propargylation Joshua J. Kennedy-Smith, Lauren A. Young, and F. Dean... . The potential of this rhenium(V)-catalyzed reaction is exemplified by application of the propargylation... , 345, 1077. (4) For Pt(IV)-catalyzed C-H functionalization, see: Pastine, S. J.; Youn, S. W.; Sames, D

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
5 Published: August 23, 2011 r 2011 American Chemical Society 14293 dx.doi.org/10.1021/ja2012627 |J. Am. Chem. Soc. 2011, 133, 1429314300
 

Summary:  in the Gold Catalyzed Oxidative Heteroarylation of Alkenes Ekaterina Tkatchouk, Neal P. Mankad, Diego Benitez... the past few decades, group 10 transition metal catalyzed cross couplings have become indispensable... (I) by developing oxidative trans- formations proposed to involve Au(I)/Au(III) cycles. In this regard, the ...

  

Source: Goddard III, William A. - Materials and Process Simulation Center & Department of Chemistry, California Institute of Technology

 

Collection: Materials Science

 
6 Transactions of the ASAE Vol. 48(4): 1471-1479 E 2005 American Society of Agricultural Engineers ISSN 0001-2351 1471
 

Summary:  in catalyzing high-erucic-acid (HEA) oils, namely fatty-acid-specific, region-specific, and non... .1.1.3) catalyze numerous types of enzymatic reactions, including hydrolysis, esterification, transesteri- fication... double bond, in catalyzing HEA oil conversions. In addition, most EAs only appear at the primary

  

Source: He, Brian - Department of Biological and Agricultural Engineering, University of Idaho

 

Collection: Renewable Energy

 
7 Organic Division October Cumulative Examination
 

Summary:  in the product you gave in part A. 2. (10 pts) Provide a mechanism for the following (Ojima, I.; et. al. Chem... Organic Division October Cumulative Examination Metal-Catalyzed Cyclization Reactions 1. Mn(OAc)3... . Rhodium(II) carboxylates catalyze the cycilization of carbeniods with carbonyls to give ...

  

Source: Glaser, Rainer - Department of Chemistry, University of Missouri-Columbia

 

Collection: Chemistry

 
8 Synthesis of Indenyl Ethers by Gold(I)-Catalyzed Intramolecular Carboalkoxylation of Alkynes
 

Summary:  -addition of a nucleophile generating a vinylgold intermediate (A).2 Trapping of this intermediate with carbon... Synthesis of Indenyl Ethers by Gold(I)-Catalyzed Intramolecular Carboalkoxylation of Alkynes Pascal... been re- ported to catalyze a variety of transformations involving alkynes. While back-bonding ...

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
9 Chapter 2 Comparison between EC/MS and cytochrome P450 catalyzed oxidation reactions Comparison between electrochemistry/mass
 

Summary:  is oxidized by several human cytochrome P450 enzymes, including CYP 2E1, 1A2, 2A6, 3A4 and 2D6, to its toxic... Chapter 2 Comparison between EC/MS and cytochrome P450 catalyzed oxidation reactions 17 Chapter 2... Comparison between electrochemistry/mass spectrometry and cytochrome P450 catalyzed oxidation ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
10 The work described in this thesis was carried out at the department of Organic and Molecular Inorganic Chemistry, Stratingh Institute,
 

Summary:  catalysis using transition metal complexes 4 1.3 Chiral intermediates 6 1.4 Rh-catalyzed asymmetric... secondary alcohols 19 1.8 Rh-catalyzed asymmetric hydroformylation 26 1.9 Aim of this thesis 30 1... .10 References and notes 30 Chapter 2 Enantioselective Rh-Catalyzed Hydrogenation of Enol Carbamates

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
11 Mechanism of the Acid-Catalyzed Si-O Bond Cleavage in Siloxanes and Siloxanols. A Theoretical Study
 

Summary:  Mechanism of the Acid-Catalyzed Si-O Bond Cleavage in Siloxanes and Siloxanols. A Theoretical Study... of acid- catalyzed hydrolysis, due to better stabilization of the charged transition states. The enhanced... . Introduction Acid-catalyzed condensation of silanol groups is the most important reaction leading

  

Source: Apeloig, Yitzhak - Department of Chemistry, Technion, Israel Institute of Technology

 

Collection: Chemistry

 
12 Pd-Catalyzed CdC Double-Bond Formation by Coupling of
 

Summary:  (20 mmol %) and 1a/2a ) 1:1 led to the highest yield of 3a (entry 13). It is worth noting... Pd-Catalyzed CdC Double-Bond Formation by Coupling of N-Tosylhydrazones with Benzyl Halides Qing... , Shanghai 200032, China wangjb@pku.edu.cn Received August 13, 2009 ABSTRACT Pd-catalyzed reaction of N

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
13 Synthesis & conformational analysis of his-phe-arg-trp-nh2 analogues with antifungal properties
 

Summary:  to the guidelines of the National Committee for Clinical Laboratory Standards for yeasts (M27-A2) (Pfaller 2002a... - taneous side chain deprotection by acidolysis with anhydrous hydrogen fluoride containing 2% anis- ole, 8... . The peptides were cleaved from the resin with simultaneous side chain deprotection by ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
14 ~ristalsof bovine chyrnotrypsin. Enzymes are proteins specialized to catalyze biological reac-
 

Summary:  Figure 8-1 ~ristalsof bovine chyrnotrypsin. 1 Enzymes are proteins specialized to catalyze... of malt, and pointed out that hydrolysis of starch is more efficiently catalyzed by diastase than by sul... - furic acid. Although Louis Pasteur recognized that fermentation is catalyzed by enzymes, he postulated

  

Source: Vallino, Joseph J. - Ecosystems Center, Marine Biological Laboratory, Woods Hole

 

Collection: Environmental Sciences and Ecology

 
15 Au(I)-Catalyzed Enantioselective 1,3-Dipolar Cycloadditions of Mu2nchnones with Electron-Deficient Alkenes
 

Summary:  #12;a 2-methylphenyl C2 substituent, providing product 2f in good yield with 86% ee.11 Similarly, C4... Au(I)-Catalyzed Enantioselective 1,3-Dipolar Cycloadditions of Mu2nchnones with Electron... numerous advances, relatively few enantioselective gold-catalyzed transforma- tions have been described

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
16 Basics of Chemical Kinetics -1 Rate of reaction = rate of disappearance of A =
 

Summary:  /volume) ; 1 mole = 6.023x1023 molecules rA = -k [A] rA = -k [A]2 rA = -k1 [A]/(1+k2[A]) Reaction rate law... ssss 1 1 ss --== -- #12;Enzyme-catalyzed reactions Most reactions in biological systems would not take... . In this context, the reactants are called substrates. In enzyme-catalyzed reactions the rate ...

  

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

 

Collection: Biology and Medicine

 
17 Au-catalyzed isomerization of cyclopropenes: a novel approach to indene derivatives
 

Summary:  min, 99% (This work) a2a1 Scheme 1. OMe O O O 5 mol% AgOTf CH2Cl2, rt, 1h 40 % 5 mol% AuPPh3Cl 3 4... mol%) AgOTf (2 mol%) CH2Cl2, rt, time 1a- a2f -f Entry 1, R Time 2, Yielda (%) 1 1a, H 30 min 2a, 99 2... Au-catalyzed isomerization of cyclopropenes: a novel approach to indene ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
18 This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research
 

Summary:  5 mol% AgOTf DCE, reflux, 2h 88%1a a3a2 Scheme 2. Au-catalyzed reaction of 1a and 2a. Table 1... conditions Ph H O HC(OEt)3 Ph Ph Ph OEt + + DCE, 83 o C cat.(5 mol%) 4a 2a 3a Entry Cat. (5 mol %) t (h... 's personal copy AuPPh3Cl/AgOTf-catalyzed reaction of terminal ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
19 CVD SWNT van der Waal
 

Summary:  calculation at 2500K for Ni108. Fig. 1 Initial condition of growth simulation. #12; 2 ( 2(a)) ( 2(b)) ( 2(c... and a nickel cluster, the metal-catalyzed growth of the cap-structure of SWNTs was calculated. Carbon atoms... Fig. 2 Snapshots of metal-catalyzed growth of the cap structure after 130 ns molecular ...

  

Source: Maruyama, Shigeo - Department of Mechanical Engineering, University of Tokyo

 

Collection: Materials Science

 
20 Evolution of Enzymatic Activities in the Orotidine 5-Monophosphate Decarboxylase Suprafamily: Mechanistic Evidence for a Proton Relay System in
 

Summary:  .7 × 103 D67A 2.4 ( 0.2 (5.0 ( 0.2) × 10-4 4.8 × 103 E112Q 4.0 ( 0.3 (3.1 ( 0.1) × 10-4 1.3 × 104 E112A 0... .2 ( 0.3) × 10-4 2.7 × 103 H136A 2.4 ( 0.1 (7.0 ( 0.2) × 10-4 3.4 × 103 R139V 8.9 ( 0.2 (3.6 ( 0.3) × 10... .3) × 10-3 6.6 × 103 K64A/E112Q/H136A 2.9 ...

  

Source: Rayment, Ivan - Department of Biochemistry, University of Wisconsin at Madison

 

Collection: Chemistry ; Biology and Medicine


Page:   2  3  4  5 
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21 Palladium-catalyzed cyclopropanation of electron-deficient olefins with aryldiazocarbonyl compounds
 

Summary:  Me Pd(OAc)2 MeO2C CO2Me Ph + PhCH3, 80 o C 86% cis:trans > 95:5 1a 2a 3a Scheme 1. Pd(OAc)2-catalyzed... N2 OMe O MeO2C EWG Ph R1 R2 EWG R1 R2 1a 2a-g 3q + Pd(OAc)2 (5 mol%) PhCH3, 80 o C Entry 2a­g, R1... N2 1a 2g 3q L: ClCH2CH2Cl rt, 10 days ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
22 Use of antibodies to dissect the components of a catalytic event. The cyclopropenone hapten
 

Summary:  O H N O O OHO2N 1 O O 2a 2b + ­ O O R O O R N H O O OO2N N H O 6 7 8 a R = H b R = NO2 a R = H b R... Antibodies elicited against the planar cyclopropenone hap- ten 1 efficiently catalyze ester hydrolysis... to elicit antibodies that catalyze various interconversion reactions of carboxylic acid derivatives.2 ...

  

Source: Keinan, Ehud - Department of Chemistry, Technion, Israel Institute of Technology

 

Collection: Biotechnology ; Chemistry

 
23 THE UNIVERSITY OF MANITOBA DATE: Oct. 22, 2002 Midterm EXAMINATION
 

Summary:  are 1.88, 3.65 (R-group) and 9.60. A) 2.76 B) 4.13 C) 6.62 D) 7.38 E) 9.60 9. The regular folding... ? A) 2 min B) 3 min C) 6 min D) 12 min E) 24 min *** #12;... in an enzyme-catalyzed reaction is to: A) ensure the product is more stable than the substrate B) make

  

Source: O'Neil, Joe - Department of Chemistry, University of Manitoba

 

Collection: Biology and Medicine ; Chemistry

 
24 Genetically Encoded Short Peptide Tags for Orthogonal Protein Labeling by Sfp and AcpS
 

Summary:  ) and AcpS (A1, A2, A3, and A4), respectively. After PPTase-catalyzed modification of selected pep- tide... - otin Ppant transfer reaction from biotin-CoA (2) to the peptides catalyzed by Sfp or AcpS were measured... ). TABLE 1. Kinetic characterization of Sfp- and ...

  

Source: Yin, Jun - Department of Chemistry, University of Chicago

 

Collection: Chemistry

 
25 Impaired Transition State Complementarity in the Hydrolysis of O-Arylphosphorothioates by Protein-Tyrosine Phosphatases
 

Summary:  for the PTPases. Brønsted analyses suggest that like the PTPase-catalyzed phosphoryl transfer reaction... the transition state for the PTPase-catalyzed thiophosphoryl transfer is highly dissociative, similar... in the enzyme active site with the larger sulfur substitution. Protein tyrosine phosphatases (PTPases)1 catalyze

  

Source: Herschlag, Dan - Department of Biochemistry, Stanford University

 

Collection: Biology and Medicine

 
26 This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research
 

Summary:  NH2Cl3C + + 1a 2a 3a 4 Scheme 1. Catalytic reaction of terminal alkyne with benzylic... 's personal copy Gold(I)-catalyzed arylmethylation of terminal alkynes Changkun Li, Weibin Li, Jianbo Wang... March 2009 Available online 16 March 2009 Keywords: Au-catalyzed reaction Terminal alkyne

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
27 COPPER-CATALYZED CROSS-COUPLING REACTIONS: THE FORMATION OF CARBON-CARBON AND CARBON-SULFUR BONDS
 

Summary:  COPPER-CATALYZED CROSS-COUPLING REACTIONS: THE FORMATION OF CARBON-CARBON AND CARBON-SULFUR BONDS... Chemistry #12;© Copyright by Craig G. Bates 2005 All Rights Reserved #12;COPPER-CATALYZED CROSS... without her. Thank You January 24, 2005 #12;vi ABSTRACT COPPER-CATALYZED CROSS-COUPLING REACTIONS

  

Source: Venkataraman, Dhandapani "DV" - Department of Chemistry, University of Massachusetts at Amherst

 

Collection: Chemistry

 
28 Two distinct modes of RecA action are required for DNA polymerase V-catalyzed translesion synthesis
 

Summary:  template nt), 1 M RecA (1:10), 2 M RecA (1:5), 4 M RecA (1:2.5), 8 M RecA (1:1.25), 20 M RecA (2:1). The p... A concentration in the presence and absence of a template abasic lesion. (a) 2-nt DNA template gap; (b) 3-nt DNA... Two distinct modes of RecA action are required for DNA polymerase ...

  

Source: Cox, Michael M. - Department of Biochemistry, University of Wisconsin at Madison

 

Collection: Biology and Medicine

 
29 Au(I)-Catalyzed Ring Expanding Cycloisomerizations: Total Synthesis of
 

Summary:  Ynylidenecyclopropanesa entry substrate X time (h) yield 1 6a H 1.25 75%a 2 6b 2-Me 1.5 75% 3 6c 2-I 1.25 91% 4 6d 4-Me 14... Au(I)-Catalyzed Ring Expanding Cycloisomerizations: Total Synthesis of Ventricosene Steven G... The gold(I)-catalyzed cycloisomerization of enynes containing an embedded cyclopropane ...

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
30 phosphopantetheinyl transferase Genetically encoded short peptide tag for versatile protein labeling by Sfp
 

Summary:  residue by various small-molecule­CoA conjugates (CoA-SR): 1, biotin­CoA; 2, fluo- rescein­CoA; 3... biotin­CoA and Sfp were added (1) or only biotin­CoA (2) or Sfp (3) was added as control. Yin et al. PNAS... substrate for Sfp phosphopantetheinyl transferase- catalyzed protein ...

  

Source: Yin, Jun - Department of Chemistry, University of Chicago

 

Collection: Chemistry

 
31 phosphopantetheinyl transferase Genetically encoded short peptide tag for versatile protein labeling by Sfp
 

Summary:  residue by various small-molecule­CoA conjugates (CoA-SR): 1, biotin­CoA; 2, fluo- rescein­CoA; 3... biotin­CoA and Sfp were added (1) or only biotin­CoA (2) or Sfp (3) was added as control. Yin et al. PNAS... substrate for Sfp phosphopantetheinyl transferase- catalyzed protein ...

  

Source: Walsh, Christopher T.- Department of Biological Chemistry and Molecular Pharmacology, Harvard University

 

Collection: Biology and Medicine

 
32 Protein Synthesis by Solid-Phase Chemical Ligation Using a Safety Catch Linker
 

Summary:  was cleaved from the resin by reductive acidolysis using 1 M SiCl4, 10% thioanisol, 6% EDT, and 10% m... with TFA, to prevent possible high-temperature (TFA/ DMF)-catalyzed pyrrolidone formation. After the chain

  

Source: Keinan, Ehud - Department of Chemistry, Technion, Israel Institute of Technology

 

Collection: Biotechnology ; Chemistry

 
33 The two faces of network dynamics Evolving network models describe the dynamics/assembly/evolutionEvolving network models describe the dynamics/assembly/evolution
 

Summary:  = oductPrA rA = -k [A] rA = -k [A]2 rA = -k1 [A]/(1+k2[A]) Reaction rate law is an algebraic equation... ss0 1 1 ssss 1 1 ss --== -- Solve for Css #12;Enzyme-catalyzed reactions Most reactions in biological... substrates. In enzyme-catalyzed reactions the rate of product synthesis depends nonlinearly

  

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

 

Collection: Biology and Medicine

 
34 Understanding the dynamics and function of cellular networks
 

Summary:  ] = concentration of A = (# moles/volume) ; 1 mole = 6.023x1023 molecules rA = -k [A] rA = -k [A]2 rA = -k1 [A]/(1+k... C ss0ss0 1 1 ssss 1 1 ss --== -- #12;Enzyme-catalyzed reactions Most reactions in biological systems... times. In this context, the reactants are called substrates. In enzyme-catalyzed ...

  

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

 

Collection: Biology and Medicine

 
35 Mechanism of Pyridine-Catalyzed SiO2 Atomic Layer Deposition Studied by Fourier Transform Infrared Spectroscopy
 

Summary:  half-reaction, the chamber was evacuated and a new FTIR spectrum was collected as shown by Figure 6a(2... from the FTIR spectrum as shown by Figure 6a(2). However, a substantial amount of hydrogen- bonded... hydroxyls are still present as observed in Figure 6a(2). ...

  

Source: George, Steven M. - Department of Chemistry and Biochemistry, University of Colorado at Boulder

 

Collection: Materials Science ; Chemistry

 
36 Enolate Chemistry Electrophile (E+)
 

Summary:  -+. #12;A. A.2.3 Carboxylation of Enolates N O O O BnO R Ar N O O R Ar BnOOC Fe Me Me MeMe Me N N 2% cat... . t-amyl alcohol 0 °C, 6 h 88-92% ee #12;A. A.2.4 Enolate Chemistry: Halogenation N H p-ClC6H4COO N Me... Catalyzed Enolate Arylation RN(Ar) O RO OR O O O O O2N CH2R ROOC CH2R ...

  

Source: Charette, André - Département de Chimie, Université de Montréal

 

Collection: Chemistry

 
37 PathaCross-coupling Homo-coupling
 

Summary:  , and reductive elimi- nation to give the coupling products (Scheme 1, path a).2b If a homocoupling reaction... Homo-coupling TETRAHEDRON LETTERS Tetrahedron Letters 43 (2002) 2525­2528Pergamon A novel palladium-catalyzed... 2002; revised 14 February 2002; accepted 15 February 2002 ...

  

Source: Zhang, Xumu - Department of Chemistry, Pennsylvania State University

 

Collection: Chemistry

 
38 This article was originally published in a journal published by Elsevier, and the attached copy is provided by Elsevier for the
 

Summary:  -Table 1. Diazo decomposition in water Ph OH N2 OEt O Ph O OEt O H OEt OOH Ph catalyst H2O, r.t. + 1a 2a 3a... : http://www.elsevier.com/locate/permissionusematerial #12;Author's personal copy CuSO4-catalyzed diazo... -keto esters. Among these methods, the condensation of ethyl diazoacetate (EDA) with aldehydes ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
39 Understanding the dynamics and function of cellular networks
 

Summary:  of A = (# moles/volume) ; 1 mole = 6.023x1023 molecules rA = -k [A] rA = -k [A]2 rA = -k1 [A]/(1+k2[A]) Reaction... C ss0ss0 1 1 ssss 1 1 ss --== -- #12;Enzyme-catalyzed reactions Most reactions in biological systems... times. In this context, the reactants are called substrates. In enzyme-catalyzed ...

  

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

 

Collection: Biology and Medicine

 
40 Understanding the dynamics and function of cellular networks
 

Summary:  of A = (# moles/volume) ; 1 mole = 6.023x1023 molecules rA = -k [A] rA = -k [A]2 rA = -k1 [A]/(1+k2[A]) Reaction... C ss0ss0 1 1 ssss 1 1 ss --== -- #12;Enzyme-catalyzed reactions Most reactions in biological systems... times. In this context, the reactants are called substrates. In enzyme-catalyzed ...

  

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

 

Collection: Biology and Medicine


Page:   1  2  3  4  5 
Page:   1  2  3  4  5 
 
41 Enolate Chemistry Electrophile (E+)
 

Summary:  - Dream or reality? Angew. Chem. Int. Ed. 2000, 39, (4), 802-+. Monday, February 21, 2011 #12;A. A.2... h 88-92% ee Monday, February 21, 2011 #12;A. A.2.4 Enolate Chemistry: Halogenation N H p-ClC6H4COO N... , 2011 #12;A. Transition Metal Catalyzed Enolate Arylation RN(Ar) O RO OR O O O O ...

  

Source: Charette, André - Département de Chimie, Université de Montréal

 

Collection: Chemistry

 
42 Tetrahedron Letters,Vol.30,No.41,pp 5533-5536,1989 0040-4039/89 $3.00 + .OO Printed in Great Eritain Pergamon Press plc
 

Summary:  at low temperature R=OMe & R=Me do:&+ bR _+_&R 2a,three,R = Me, with BF3 4a 2a,erythro, R= Me, with TiCL4... under acid- catalyzed conditions. Additions of ester dienolates or ester dienolate anions to carbonyl... and cyclohexanone in anticipation that their acid-catalyzed reactions would be ...

  

Source: Hudlicky, Tomas - Department of Chemistry, Brock University

 

Collection: Chemistry

 
43 Homochiral selection in the montmorillonite-catalyzed and uncatalyzed Prebiotic synthesis of RNA
 

Summary:  into four peaks of increasing retention time which contained (1) D,D- and L,L-A2ApA, (2) D,L- and L,D-A2Ap... ,L-ImpA (mM) 0.15 0.15 0.60 0.60 0.15 0.15 0.60 0.60 Reaction Time (h) D,D & L,L (%) 2 18 2 18 2 18 2 18 A2Ap... ...

  

Source: Ferris, James P. - Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute

 

Collection: Chemistry ; Biology and Medicine

 
44 The origin of large molecules in primordial autocatalytic reaction networks
 

Summary:  . When the reaction pair A(1) + A(1) A(2) is not catalyzed the production of A(2) takes place at a much... ) and the dimer. If we assume that the sole reaction pair A(1) + A(1) A(2) is catalyzed by ...

  

Source: Santa Fe Institute

 

Collection: Multidisciplinary Databases and Resources

 
45 14306 Biochemistry 1994, 33, 14306-14316 Single-Turnover Kinetics of Helicase-Catalyzed DNA Unwinding Monitored
 

Summary:  (A26dA492 = 0.3 for fluorescein;A 2 d A535 = 0.3 for hexachlorofluorescein). The extinction... ,2 = 0.026 f0.001 s-l, and A2 = 0.194 & 0.003 V, which were determined from nonlinear least squares... ,l and amplitude A1 and is well resolved from a slower phase occurring with rate constant kobs,2 and ...

  

Source: Cistola, David P. - Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis; Lohman, Timothy M. - Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis

 

Collection: Biology and Medicine

 
46 Subscriber access provided by BRANDEIS UNIV The Journal of Physical Chemistry is published by the American Chemical Society. 1155
 

Summary:  - z + z E E ( A l l where T z=cz,t = -k7B9 `= ( k,k,A 2k4k7B k,C k,C k4,C ' e, = -klB k7B k9 p... by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Oscillations and waves in metal-ion-catalyzed... #12;7578 J. Phys. Chem. 1993,97,1518-7584 Oscillations and Waves in ...

  

Source: Epstein, Irving R. - Department of Chemistry, Brandeis University

 

Collection: Chemistry

 
47 Author's personal copy Dual activity of certain HIT-proteins: A. thaliana Hint4 and C. elegans DcpS act
 

Summary:  -pA 8, Ap3A 7 and Ap4A 2. The enzyme also catalyzed slow ADP M Pi exchange with a rate rel- ative... -phosphofluoride (F-pA) and adenosine 50 -(c-fluorotriphosphate) (Fpp-pA) [2]. Fhit proteins belong... -pA 8 0 17 0 App-pA 7 5 0 4 Appp-pA 2 0 0 0 ...

  

Source: Davis, Richard E. - Department of Biochemistry and Molecular Genetics, University of Colorado Health Sciences Center

 

Collection: Biology and Medicine

 
48 VANDERBILT UNIVERSITY OFFICE OF CAMPUS RECREATION
 

Summary:  Catalyzers I I 2 Cougars II 3 Dangle FC I 4 I Don't Know II 5 Here For Beer I I 6 Fake Madrid III Date Time... Field Home Score Vs Away 21-Mar-11 07:00 PM Field 3 Catalyzers T Vs I Don't Know 21-Mar-11 06:00 PM... -11 05:00 PM Field 1 Here For Beer 2 to 0 Vs Catalyzers 27-Mar-11 05:00 PM Field 2 I Don't Know Vs

  

Source: Bordenstein, Seth - Department of Biological Sciences, Vanderbilt University

 

Collection: Biology and Medicine

 
49 A higher level ab initio quantum-mechanical study of the quadrupole moment tensor components of carbon dioxideq
 

Summary:  in the hydrolysis and acidolysis of carbodiimides because of their role as reactive inter- mediates in guanine... catalyzed [29,30] and the non-enzymatically catalyzed reactions were studied [31±33] and the latter reaction

  

Source: Glaser, Rainer - Department of Chemistry, University of Missouri-Columbia; Lewis, Michael - Department of Chemistry, Saint Louis University

 

Collection: Chemistry

 
50 The Central Enzymes of the Aspartate Family of Amino Acid
 

Summary:  bifunc- tional enzyme (Table 5). The remaining portion of the thrA gene, called thrA2, consists... , this region was removed from the monofunc- tional HDH. This gene fragment, called thrA2, encodes for only... that encodes for the monofunctional AK III with the thrA2 ...

  

Source: Viola, Ronald - Department of Chemistry, University of Toledo

 

Collection: Chemistry ; Biology and Medicine

 
51 Published: February 20, 2011 r 2011 American Chemical Society 2236 dx.doi.org/10.1021/es1028662 |Environ. Sci. Technol. 2011, 45, 22362242
 

Summary:  be catalyzed by protons at low pH (e.g., A2@P mechanism) and by hydroxide ions at high pH. Acid-catalyzed... that the steric effects are similar for both uncatalyzed and acid-catalyzed hydrolysis. Thus, only the backside A2... of ...

  

Source: Borch, Thomas - Department of Soil and Crop Sciences, Colorado State University

 

Collection: Environmental Sciences and Ecology ; Geosciences

 
52 Asymmetric Hydrogenation using Monodentate Ligands
 

Summary:  of hydrogenation of dehydroamino acids using [Rh(42a)2COD]BF4 are not very high at 1 bar of hydrogen pressure... 1 Chapter 1 Asymmetric Hydrogenation using Monodentate Ligands Abstract In this chapter the rhodium-catalyzed... . The use of various monodentate ligands in the rhodium-catalyzed hydrogenation of ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
53 Synthesis of (+)-CP-263,114 Chuo Chen, Mark E. Layton, Scott M. Sheehan, and
 

Summary:  2, 2000 CP-263,114 (phomoidride B, 1) and CP-225,917 (phomoidride A, 2) are closely related fungal... /tandem cyclization reaction. The synthesis commenced (Scheme 2) with Pd(0)-catalyzed cross-coupling between 3... at C14 affords intermediate 13,12 poised for TMSOTf-catalyzed ionization of the C7 MOM group ...

  

Source: Shair, Matthew D.- Department of Chemistry and Chemical Biology, Harvard University

 

Collection: Chemistry

 
54 Synthetic Methods DOI: 10.1002/anie.200906349
 

Summary:  2(dba)3] (2.5)/[HPCy3]BF4 (10) DCE 33 16 none DCE 0 [a] Reaction conditions: 1a (1.0 equiv), 2a (2... (1.0 equiv), and 5a (2.0 equiv). [b] Determined by GC/MS methods. [c] Yield of isolated products... Synthetic Methods DOI: 10.1002/anie.200906349 Palladium-Catalyzed Carbonylation/Acyl ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry

 
55 Asymmetric Hydrovinylation Reaction T. V. RajanBabu
 

Summary:  ); limited to (RR)-15 as ligand; (RS)-15 gives only 6% ee) 7; 5a 2 [3-(allyl)NiCl]2 + (RR)-15 + Et3Al2Cl3 4... 32a 32c remarks 1 AgOTf 94 <4 37%ee (S) with 32a 2 AgClO4 95 <2 29% isom. with 32a 3 AgNTf2 <2 48 47... for the Reaction 2847 4.1 Nickel-Catalyzed Reactions 2847 4.2 ...

  

Source: RajanBabu, T. V. "Babu" - Department of Chemistry, Ohio State University

 

Collection: Chemistry

 
56 Rh-Catalyzed Asymmetric Hydroformylation Using
 

Summary:  in most of the cases. However, very low or no conversion was found using MonoPhosTM (A1) or A2 as ligands... of ligand in combination with the fact that A1 and A2 have the smallest substituents on the amine moiety... (400) 60 50 100 (20h) 78:22 37 2 L16b (3) 4.1a (400) 25 25 98 (20h) 80:20 31 3 ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
57 A Facile Access to N-Sulfonylimidates and Their Synthetic Utility for the
 

Summary:  for the Formation of Imidatesa entry R1 R2 R3 yield [%]b 1 Ph (1a) 4-MeC6H4 (2a) PhCH2 (3a) 4a 87 2 1a 2a 4-BrC6H4CH... 2 4bc 91 3 1a 2a Me 4c 93 4 1a 2a i-Pr 4d 73 5 1a 2a Ph 4e 61 6 1a ...

  

Source: Chang, Sukbok - Department of Chemistry, Korea Advanced Institute of Science and Technology

 

Collection: Chemistry

 
58 Catalytic DNA DOI: 10.1002/anie.200703676
 

Summary:  -rA-DNA substrate strand, which presents its riboadenosine (rA) 2'-OH group as a nucleophile to the 5'-triphosphate... Catalytic DNA DOI: 10.1002/anie.200703676 DNA-Catalyzed Formation of Nucleopeptide Linkages** P. I... of reactions known to be catalyzed by DNA. The first artificial deoxyribozyme (DNA enzyme) ...

  

Source: Pradeepkumar, P. I. - Department of Chemistry, Indian Institute of Technology Bombay; Silverman, Scott K. - Department of Chemistry, University of Illinois at Urbana-Champaign

 

Collection: Biology and Medicine ; Chemistry

 
59 Rh-Catalyzed Kinetic Resolution of Enynes and Highly Enantioselective Formation of 4-Alkenyl-2,3-disubstituted Tetrahydrofurans
 

Summary:  products, which are (2R,3R)-4a, (2S,3S)-4a, (2R,3S)-4a, and (2S,3R)-4a. Although it is easy to understand... in Scheme 2, and the competition between path A and path B, only that (2R,3S)-4a, (2S,3R)-4a were... Rh-Catalyzed Kinetic Resolution of ...

  

Source: Zhang, Xumu - Department of Chemistry, Pennsylvania State University

 

Collection: Chemistry

 
60 Solid/gas biocatalysis: an appropriate tool to study the influence of organic components on kinetics of lipase catalyzed alcoholysis
 

Summary:  , on the one hand, of 2-methyl- 2-butanol at a thermodynamic activity equal to 0.3 (a2M2B=0.3), or in presence... from 0 to 0.6. On Figure 4 the effect of a2M2B, ahexane and aW on the catalytic rate is shown... /solid reactor, are determined at constant a2M2B (i.e. ...

  

Source: Ecole Polytechnique, Centre de mathématiques

 

Collection: Mathematics


Page:   1  2  3  4  5 
Page:   1  2  3  4  5 
 
61 J. Phys. Chem. 1991,95, 5655-5660 5655 on the gelatin strands. The mechanism of the charge transfer
 

Summary:  a time A?,a molecule should move a distance qual to (20(n)A?) (A.1) L(NJV)-I (A.2) The average distance... -I is the selection probability. By setting (A.1) qual to (A.2), we can solve for Ar. At = L/(N22D(n)N) (A.3... of homopolymer mixturesq6 There have been several (1) Korkihllio, J. ...

  

Source: Garcia, Alejandro - Department of Physics and Astronomy, San José State University

 

Collection: Physics

 
62 Gold Catalysis DOI: 10.1002/anie.201002739
 

Summary:  -O2NC6H4] (5e) H 22 40 75 5 4-Me-C6H4 (5a) 3-F 23 40 75 6 4-MeC6H4 (5a) 2-Cl 24 40 56 7 4-MeC6H4 (5a... ) 4-CO2Me 25 40 83 8 4-MeC6H4 (5a) 2-CO2Me 26 40 77 9 4-MeC6H4 (5a) 4-CHO 27 40 68 10 4-MeC6H4 (5a) 4... Gold Catalysis DOI: 10.1002/anie.201002739 Gold-Catalyzed Intramolecular ...

  

Source: Goddard III, William A. - Materials and Process Simulation Center & Department of Chemistry, California Institute of Technology

 

Collection: Materials Science

 
63 De novo Design and Evolution of Artificial Disulfide Isomerase Enzymes Analogous to the Bacterial DsbC
 

Summary:  evolution for increased CuCl2 resistance: The fkpA-dsbA2 gene was subjected to random mutagenesis by error... of these colonies were picked randomly and the fkpA-dsbA2 DNA was sequenced. In addition, the MB706 cells harboring... , or 5th residue of mature DsbA, generating, respectively, FkpA-TrxA1 to ...

  

Source: Georgiou, George - Departments of Biomedical Engineering, & Chemical Engineering, University of Texas at Austin

 

Collection: Engineering ; Biotechnology

 
64 Metal-Catalyzed Heterocyclization of Chris M. Yates
 

Summary:  equiv) CH2Cl2 AgBF4 (1 equiv) CH2Cl2 Ph Ph N N O O Ph Ph H H E/Z - 1a 2a 42 % yield E - 1b 2b 42 % yield... ) O R O MeO O R O MeO 1 2a 2b 50:5068SiMe2 tBuCH2COCH37 50:5090SiMe2 tBuCH2COC(CH3)35 50:5092HMe4 50... :5060SiMe2 tBuMe3 50:5044HCH2COCH36 50:5044SiMe2 tBuCH2CH(OH)CH38 50:5072HMe2 N/A51HH1 cis:trans ...

  

Source: Johnson, Jeff S. - Department of Chemistry, University of North Carolina at Chapel Hill

 

Collection: Chemistry

 
65 Rhenium-Catalyzed Didehydroxylation of Vicinal Diols to Alkenes Using a Simple Alcohol as a Reducing Agent
 

Summary:  ) at 180 °C in solvent-free conditions, under air and in the presence of dirhenium decacarbonyl (3a, 2... the reaction of 5 (2.5 mmol) and 3a (2.5 mol %) was performed at 180 °C under air and in the presence of 5... Rhenium-Catalyzed Didehydroxylation of Vicinal Diols to Alkenes Using a ...

  

Source: Long, Jeffrey R.- Department of Chemistry, University of California at Berkeley

 

Collection: Materials Science ; Chemistry

 
66 DIVERGENCE IN STRUCTURE AND ACTIVITY OF PHENOLIC DEFENSES IN YOUNG LEAVES
 

Summary:  /epicatechin ratios of each of the I. goldmanii LH-20 fractions were determined by thiolysis, acid-catalyzed... of acidolysis and oxidation of carbohydrate-bound procyanidins (Shen et al., 1986). The extraction removed

  

Source: Coley, Phyllis - Department of Biology, University of Utah

 

Collection: Environmental Sciences and Ecology

 
67 J Biol Chem. Author manuscript Transduction of the scorpion toxin maurocalcine into cells. Evidence that
 

Summary:  together, these data are coherent with a2+ 4 direct effect of MCa on RyR1. These observations were... of 1 ml/min; (ii) amino acid analysis% ­ % % 2 after acidolysis (6 N HCl/2 (w/v) phenol, 20 h, 118 C, N

  

Source: Ecole Polytechnique, Centre de mathématiques

 

Collection: Mathematics

 
68 Sequence-and Regioselectivity in the Montmorillonite-Catalyzed Synthesis of RNA
 

Summary:  polynucleotide kinase and ATP. pA2pA was prepared by the uranyl acetate-catalyzed reaction of ImpA.9 All (8... ,5-linkage, when the pN is a purine nucleotide. For example, the yields of pA3pU and pA2pU were 26% and 6... by this route included pA3pC, pA3pU, ...

  

Source: Ferris, James P. - Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute

 

Collection: Chemistry ; Biology and Medicine

 
69 CRYSTALLIZATION OF CALCIUM PHOSPHATE ORIENTED BY SELF-ASSEMBLING DIBLOCK COPOLYMERS,
 

Summary:  of abbreviations [] Intrinsic viscosity 2DNMR Twodimension nuclear magnetic resonance spectroscopy A2 Second... (A2) is zero within the experimental error (0.5 ± 3)106 molcm3 /g2 (typical significant... values range from ± 105 to ± 103 molcm3 /g2 ; for a PEO homopolymer of 10000 ...

  

Source: Amrhein, Valentin - Zoologisches Institut, Universität Basel

 

Collection: Environmental Sciences and Ecology

 
70 Z .Biophysical Chemistry 72 1998 285295 Computer simulation of damped oscillations during
 

Summary:  the oscillations of O appear virtually around2 w xaq Z . w xaq O see Section 5.4 . O was determined as a2 cr 2 cr w... drive oxygen consumption for a w xaq w xaq while even though O - O . This results in a2 2 cr w xaq... consumption exceeds the w xaq rate of its intake. The time when O reaches ...

  

Source: Krylov, Sergey - Department of Chemistry, York University (Toronto)

 

Collection: Biology and Medicine ; Chemistry

 
71 5 Limitations of DNA-based Catalysis Towards DNA-based asymmetric Mannich, Hydrogenation, Epoxidation and
 

Summary:  vial containing 2.66 mL of the reaction medium (unbuffered water, st-DNA (a 2 mg mL-1 stock solution... -based catalysis concept are discussed. The Lewis acid- catalyzed Mannich and Juliá epoxidation reactions, as well... as rhodium- catalyzed hydrogenations of dehydroalanine derivatives and the ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
72 TETRAHEDRON Tetrahedron Letters 44 (2003) 44754478Pergamon
 

Summary:  with 2-pyridylmethyl formate 1a R2 Solvent Time (h) 2A:2Bb Yield (%)c Entry R1 C3H7 DMF1 12C3H7 ­ 39 2 C3... TETRAHEDRON LETTERS Tetrahedron Letters 44 (2003) 4475­4478Pergamon Ruthenium-catalyzed... ). This represents the first example of ruthenium-catalyzed hydroesterification of alkynes to the best of our

  

Source: Chang, Sukbok - Department of Chemistry, Korea Advanced Institute of Science and Technology

 

Collection: Chemistry

 
73 Subscriber access provided by -Access paid by the | UC Berkeley Library Journal of the American Chemical Society is published by the American Chemical
 

Summary:  propargylic ester complex A1 to allene complex A3 shown in Figure 1. Our studies indicate that A1, A2, and A3... was predicted to be 7.5 kcal/mol. Heterocycle A2 and allene A3 appear to be isoenergetic and more stable than A1... 20036 Article Mechanistic Studies on Au(I)-Catalyzed ...

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
74 Chemical Engineering Science 55 (2000) 267}273 Mechanistic studies of oscillatory copper(II) catalyzed oxidation
 

Summary:  ]" 0.001 M, [Cu(II)]"1;10\ M, k "4.5;10\ s\. 3H O #HOS O\ P2SO\ #3H>#2H O, (A2) v "k [H O... )}(A4) by replacing reaction (A2) with reaction (A2), adding a proton-dependent term in the rate law... the literature: H O #HOS O\ P2HSO\ #H>, ...

  

Source: Epstein, Irving R. - Department of Chemistry, Brandeis University

 

Collection: Chemistry

 
75 On Recursive Production and Evolvabilty of Cells: Catalytic Reaction Network Approach
 

Summary:  #12;c external control mechanism. A cell consists of a huge number of chemical species that catalyze... mutually catalyzing molecule species, each of which has catalytically active and inactive types. One... . Next, a protocell model consisting of a large number mutually catalyzing molecule species is studied

  

Source: Kaneko, Kunihiko - Department of Pure and Applied Sciences, University of Tokyo

 

Collection: Physics

 
76 Deoxyribozymes: Selection Design and Serendipity in the Development of DNA
 

Summary:  substrate combinations for DNA-catalyzed RNA ligation: (A) 2,3-cyclic phosphate with 5-hydroxyl; (B) 3... Deoxyribozymessalso called DNA enzymes or DNAzymess are DNA sequences that catalyze chemical reactions. Our lab... for pursuing DNA-catalyzed RNA ligation was simply to learn more ...

  

Source: Silverman, Scott K. - Department of Chemistry, University of Illinois at Urbana-Champaign

 

Collection: Chemistry ; Biology and Medicine

 
77 SEQUENCE-AND REGIO-SELECTIVITY IN THE MONTMORILLONITE-CATALYZED SYNTHESIS OF RNA
 

Summary:  case there was a decrease in the yields of pA3 pA and pA2 pA with time (Table I). This finding... A + C A + U G + C 2 h 3 d 2 h 3 d 2 h 2 d pC2 pC 6.3 17 pU2 pU 7.0 9.6 pC2 pC 20 7.3 pC2 pA 2.6 1.3 pU2... pA 1.1 2.0 pC2 pG 1.1 2.9 pA2 pC 24 30 ...

  

Source: Ferris, James P. - Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute

 

Collection: Chemistry ; Biology and Medicine

 
78 General introduction 1. FLAVIN (BIO)CHEMISTRY
 

Summary:  A1) and a flavin reductase (PheA2) that uses NADH. PheA2 harbors as prosthetic group a tightly bound... PheA2-bound FAD to exogenous free FAD, which is then transferred to PheA1 (van den Heuvel et al., 2004... and is related to the reductases of the multi-component ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
79 Direct Detection and Kinetic Analysis of Covalent Intermediate Formation in the 4-Amino-4-deoxychorismate Synthase Catalyzed Reaction
 

Summary:  .6, peak 2 ) 52965.5, peak 3 ) 53105.7, peak 4 ) 53143.6, and peak 5 ) 53182.3. (D) K274A + 2 equiv... -deoxychorismate Synthase Catalyzed Reaction Ze He and Michael D. Toney*,§ Department of Chemistry, Central... ReceiVed February 13, 2006 ABSTRACT: Chorismate-utilizing enzymes catalyze diverse reactions, ...

  

Source: Toney, Michael - Department of Chemistry, University of California, Davis

 

Collection: Chemistry ; Biology and Medicine

 
80 This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and
 

Summary:  ++ HN Ph 1a 2a 3a 4a NH2 5a AuCl3 + Scheme 2. AuCl3-catalyzed three-component reaction of aldehydes 1a... /CuBr-catalyzed three-component reaction of aldehydes, amines, and alkynes Fengping Xiao, Yulin Chen... on the occasion of his 77th birthday Abstract A sequential catalytic process has been developed ...

  

Source: Wang, Jianbo - College of Chemistry, Peking University

 

Collection: Chemistry


Page:   1  2  3  4  5 
Page:   1  2  3  4  5 
 
81 Physica 220 (1986) SO-61 North-Holland, Amsterdam
 

Summary:  ']. (A.2) Each of the possible new condensation reactions might be catalysed by any of the members... members is given by the ratio of (A.6) to (A.4) and yields: P2L'+t(Q a+ 2(t',+I~)2 Q1 (A.9) We shall show... stranded nucleic acids, whose reactions can be restricted to catalyzed ...

  

Source: 

 

Collection: Multidisciplinary Databases and Resources ; Physics

 
82 8912 J. Am. Chem. SOC.1993,115, 8912-8917 Single-Turnover Studies on Brewer's Yeast Pyruvate
 

Summary:  of PDC-catalyzed C(2)-hydron exchange was calculated with 1 - A2+/A2-, whereA2istheintegratedareaoftheC(2... constants for formation of acetaldehyde from pyruvate catalyzed by the thiamin diphosphate (TDP)- dependent... and ...

  

Source: Vaccaro, Joe - Department of Biochemistry, Tulane University

 

Collection: Biology and Medicine

 
83 (S,S)-BINAPHANE (S,S)-f-BINAPHANE
 

Summary:  H5, H1 (S,S)-5a 77.2 93.5(S,S)-5a2-Np, H2 9b 9c C6H5, CH33 (S,S)-5a 97.5 9d (S,S)-5a4 97.7C6H5, CH... (CH3)2 9e 4-MeO-C6H5, (S,S)-5a 99.55 CH3 9f6 4-CF3-C6H5, 93.1(S,S)-5a CH3 9g 99.5(S,S)-5a2-Np, CH37 9a... ­4852Pergamon Synthesis of novel chiral binaphthyl phosphorus ligands and their applications in ...

  

Source: Zhang, Xumu - Department of Chemistry, Pennsylvania State University

 

Collection: Chemistry

 
84 Gold(I)-Catalyzed Conia-Ene Reaction of -Ketoesters with Alkynes Joshua J. Kennedy-Smith, Steven T. Staben, and F. Dean Toste*
 

Summary:  Gold(I)-Catalyzed Conia-Ene Reaction of -Ketoesters with Alkynes Joshua J. Kennedy-Smith, Steven T... temperature needed severely limits its synthetic utility.2 On the other hand, transition metal-catalyzed3... rare.8-10 However, recent reports of group 11 metal-catalyzed addition of heteroatom nucleophiles

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
85 CHEMISTRY COLLOQUIUM Wednesday, September 14, 2011
 

Summary:  -Bond Metathesis Reactions of Nitriles and Alkynes Catalyzed by Metal-Nitride and -Alkylidyne Complexes" Marc J. A... of Mo and W catalyze degenerate N-atom exchange between nitriles,1,2 and also serve as synthetic... precursors to metal-alkylidyne complexes that catalyze alkyne metathesis (AM).3 Reversible interconversion

  

Source: Heller, Barbara - Department of Applied Mathematics, Illinois Institute of Technology

 

Collection: Mathematics

 
86 December 8, 2003 ONLINE EXCLUSIVE
 

Summary:  Nature may prefer to use "promiscuous" enzymes--those capable of catalyzing not just their "primary... -site configuration to catalyze both primary and promiscuous functions, notes Dan S. Tawfik, a senior scientist... may be able to catalyze a different reaction." He points to several examples in which small structural

  

Source: Tawfik, Dan S. - Department of Biological Chemistry, Weizmann Institute of Science

 

Collection: Biotechnology ; Biology and Medicine

 
87 Protein-Resistant Silicones: Incorporation of Poly(ethylene oxide) via Siloxane Tethers
 

Summary:  ) 1 1 3% c1P1 c (n ) 13) 1 1 2% a1P2 a (n ) 0) 1 2 9% b1P2 b (n ) 4) 1 2 8% c1P2 c (n ) 13) 1 2 4% a2P... a2P3, b2P3, and c2P3), e1 wt % of un-cross-linked material was extracted. Thus, ii and iii... :3 molar ratio of a, b, or c to P is stoichiometrically balanced. Thus, for films ...

  

Source: Grunlan, Melissa A. - Department of Biomedical Engineering, Texas A&M University

 

Collection: Materials Science ; Engineering

 
88 Enantioselective Ring-Opening DOI: 10.1002/anie.200804415
 

Summary:  . A variety of yttrium compounds, among them monomeric complexes 1a, 1b, 2a, 2b, and 2c (Figure 2),[9] were... -Aziridines with TMSN3 or TMSCN Catalyzed by Discrete Yttrium Complexes** Bin Wu, Judith C. Gallucci, Jon R. Parquette... enantioselective ring-opening of meso-aziridines with TMSN3, which were ...

  

Source: RajanBabu, T. V. "Babu" - Department of Chemistry, Ohio State University

 

Collection: Chemistry

 
89 INDEPENDENT PUBLICATIONS 20. Dhondi, P. K.; Carberry, P.; Choi, L. B.; Chisholm, J. D. "Addition of Alkynes to Aldehydes and
 

Summary:  of Alkynes to Aldehydes and Activated Ketones Catalyzed by Rhodium-Phosphine Complexes." J. Org. Chem. 2007... , 72, 9590- 9596. 19. Dhondi, P. K.; Carberry, P.; Chisholm, J. D. "Ligand Effects in the Rhodium-Catalyzed... . 2007, 48, 8743-8746. 18. Ganci, G. R.; Chisholm, J. D. "Rhodium-Catalyzed Addition of Aryl Boronic

  

Source: Doyle, Robert - Department of Chemistry, Syracuse University

 

Collection: Chemistry

 
90 Do Electrostatic Interactions with Positively Charged Active Site Groups Tighten the Transition State for Enzymatic
 

Summary:  charge results in less intimate, more distant electrostatic interactions (Scheme 3A). (2) The lower... substrates. Despite the difference in substrate charge, the observed Brønsted coefficients for AP-catalyzed... catalyzes the phosphate ester reaction with a catalytic proficiency that is at least 1010- ...

  

Source: Herschlag, Dan - Department of Biochemistry, Stanford University

 

Collection: Biology and Medicine

 
91 35nd ACS National Meeting April 6-10, 2006 New Orleans, Louisiana
 

Summary:  -Tropsch Synthesis Catalyzed on a Fe(1,0,0) Surface Symposium on Computational Catalysis Division of Computers... in Chemistry #12;2 The Fe-catalyzed F-T synthesis of Hydrocarbons: A DFT study Outline § Introduction to F... on steps Synergetic effects between Fe and Co #12;3 The Fe-catalyzed F-T synthesis of hydrocarbons: A DFT

  

Source: Ziegler, Tom - Department of Chemistry, University of Calgary

 

Collection: Chemistry

 
92 Copper-catalyzed enantioselective conjugate addition of
 

Summary:  ,R,R)-L1. 1a 2a-d O OCu(OTf)2 (5 mol%) (S,R,R)-L1 (10 mol%) RM (2.0 eq.) -25 o C Ph Ph Ph Ph R Entry RM... Chapter 6 Copper-catalyzed enantioselective conjugate addition of organometallic reagents... to acyclic dienones The enantioselective copper/phosphoramidite-catalyzed 1,4-addition of dialkylzinc

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
93 Enantioselective Cu-catalyzed allylic alkylation with Grignard reagents
 

Summary:  system based on modular peptidic Schiff base ligands (Figure 2.1a)2 and one based on chiral N... 92% 87 : 13 94% (S) 4 1a ( )2 ( )2 2d 93% 91 : 9 95% (S) 5d,e 1a i-Bu 2e 89%f 42 : 58 6% #12... Chapter 2 Enantioselective Cu-catalyzed allylic alkylation with Grignard reagents using ...

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
94 Gold(I)-Catalyzed Stereoselective Olefin Cyclopropanation Magnus J. Johansson, David J. Gorin, Steven T. Staben, and F. Dean Toste*
 

Summary:  Gold(I)-Catalyzed Stereoselective Olefin Cyclopropanation Magnus J. Johansson, David J. Gorin... that carbene-like intermediates may be involved in a number of gold- (I)-catalyzed reactions.3 Similar... reactivity has been observed in transition-metal catalyzed olefin cyclopropanation with propargyl acetates

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
95 This article was published as part of the C---H functionalisation in organic
 

Summary:  and environmental benefits of these transformations over traditional synthetic methods. In nature, enzymes catalyze... of the amazing rate enhancements of enzyme-catalyzed reactions, including C­H functionalization, over their non-catalyzed... as an introduction to the exciting array of enzyme-catalyzed ...

  

Source: Arnold, Frances H. - Division of Chemistry and Chemical Engineering, California Institute of Technology

 

Collection: Chemistry ; Biology and Medicine

 
96 Monitoring the kinetics and thermodynamics of interfacial enzymatic catalysis by differential scanning calorimetryq
 

Summary:  the kinetics and ther- modynamics of phospholipase A2-catalyzed 1,2-dipalmitoyl-sn-glycero-3-phosphocholine... Phospholipase A2 (PLA2) catalyzed phosphatidylch- oline hydrolysis, a model system to study interfacial... calorimetry; Enzyme; Phospholipase ...

  

Source: Luhua, Lai - Institute of Physical Chemistry, Peking University

 

Collection: Chemistry ; Biotechnology

 
97 Enantioselective copper catalyzed allylic alkylation using Grignard reagents
 

Summary:  Enantioselective copper catalyzed allylic alkylation using Grignard reagents Applications... ;titelblad en franse pagina_final RIJKSUNIVERSITEIT GRONINGEN Enantioselective copper catalyzed allylic... Chapter 1: The niche of copper in transition metal catalyzed asymmetric allylic substitution 1

  

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

 

Collection: Biology and Medicine ; Environmental Sciences and Ecology

 
98 Gold(I)-Catalyzed Ring Expansion of Cyclopropanols and Cyclobutanols Jordan P. Markham, Steven T. Staben, and F. Dean Toste*
 

Summary:  Gold(I)-Catalyzed Ring Expansion of Cyclopropanols and Cyclobutanols Jordan P. Markham, Steven T... -alkynylcycloalkanols; however, only a few examples of transition metal-catalyzed expansion of 1-alkynylcyclobutanols... - pothesized that related cationic gold(I) complexes might be capable of catalyzing ring expansion6 reactions

  

Source: Toste, Dean - Department of Chemistry, University of California at Berkeley

 

Collection: Chemistry

 
99 GREGORY C. FU Department of Chemistry Massachusetts Institute of Technology
 

Summary:  , P. S.; Schuer, S.; Nomura, D. K.; Rosen, H.; Fu, G. C.; Cravatt, B. F. (180) PhosphineCatalyzed... . 2010, 49, 6676­6678. Lu, Z.; Fu, G. C. (176) NickelCatalyzed Enantioselective Negishi Cross... , G. C. (175) NickelCatalyzed Asymmetric Negishi CrossCouplings of Racemic Secondary Allylic

  

Source: Fu, Gregory C. - Department of Chemistry, Massachusetts Institute of Technology (MIT)

 

Collection: Chemistry

 
100 Page 1 of 4 Assessment of Student Learning Plan
 

Summary:  of scientific data. X X X N/A 2. How will the learning outcomes be assessed? What groups will be included... catalyzed by enzyme A and one by enzyme B. A- cells accumulate product a, B- cells accumulate product b... product b, which step occurs first in the pathway ­ the one catalyzed by enzyme A or the one ...

  

Source: Kaufman, Glennis A. - Division of Biology, Kansas State University

 

Collection: Environmental Sciences and Ecology


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