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Title: Metal-free amidation of ether sp3 C–H bonds with sulfonamides using PhI(OAc)2

Journal Article · · RSC Advances
DOI:https://doi.org/10.1039/C4RA09665G· OSTI ID:1607794
 [1];  [2];  [1];  [2]
  1. Yale Univ., New Haven, CT (United States)
  2. Univ. of Virginia, Charlottesville, VA (United States)

A selective protocol for the metal-free α-C–H amidation of ethers using sulfonamides and hypervalent iodine oxidants has been developed. The absence of precious metals and the conditions employed make the method environmentally attractive. A number of cyclic and acyclic, linear and branched ethers have been successfully amidated, and a broad sulfonamide scope has been demonstrated. Two unusual reactions, namely the amidation of an unactivated tert-butyl group and a tandem C–C coupling reaction, are further described here.

Research Organization:
Univ. of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001298
OSTI ID:
1607794
Journal Information:
RSC Advances, Vol. 4, Issue 89; ISSN 2046-2069
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (80)

Direct Azole Amination: CH Functionalization as a New Approach to Biologically Important Heterocycles journal February 2010
Direct acetoxylation and etherification of anilides using phenyliodine bis(trifluoroacetate) journal January 2011
α-Amidation of Cyclic Ethers Catalyzed by Simple Copper Salt and a Mild and Efficient Preparation Method for α,ϖ-Amino Alcohols journal June 2007
Metal-Free Oxidative C-H Bond Amination at Ambient Temperature journal February 2012
Metal-free synthesis of 2-aminobenzoxazoles using hypervalent iodine reagent journal March 2013
Nonheme Iron-Mediated Amination of C(sp 3 )–H Bonds. Quinquepyridine-Supported Iron-Imide/Nitrene Intermediates by Experimental Studies and DFT Calculations journal May 2013
Selective functionalisation of saturated C–H bonds with metalloporphyrin catalysts journal January 2011
A New Type of Imido Group Donor:  Synthesis and Characterization of Sulfonylimino-λ 3 -bromane that Acts as a Nitrenoid in the Aziridination of Olefins at Room Temperature under Metal-Free Conditions journal October 2007
N- Tosyloxycarbamates as a Source of Metal Nitrenes:  Rhodium-Catalyzed C−H Insertion and Aziridination Reactions journal October 2005
Metal-Free Iodine(III)-Promoted Direct Intermolecular C–H Amination Reactions of Acetylenes journal September 2012
Oxidation of Benzylic Alcohols and Ethers to Carbonyl Derivatives by Nitric Acid in Dichloromethane journal February 2003
Organocatalytic, Oxidative, Intramolecular CH Bond Amination and Metal-free Cross-Amination of Unactivated Arenes at Ambient Temperature journal July 2011
Amidation of Unfunctionalized Hydrocarbons Catalyzed by Ruthenium Cyclic Amine or Bipyridine Complexes journal November 2000
A mechanistic analysis of the Rh-catalyzed intramolecular C–H amination reaction journal April 2009
Discovery, Modeling, and Human Pharmacokinetics of N -(2-Acetyl-4,6-dimethylphenyl)-3-(3,4-dimethylisoxazol-5-ylsulfamoyl)thiophene-2-carboxamide (TBC3711), a Second Generation, ET A Selective, and Orally Bioavailable Endothelin Antagonist 1 journal April 2004
Ruthenium Porphyrin Catalyzed Friedel–Crafts type Reaction of Arenes with Imines journal January 2012
Highly Regioselective Amination of Unactivated Alkanes by Hypervalent Sulfonylimino- 3-Bromane journal April 2011
Sodium Periodate as a Primary Oxidant for Water-Oxidation Catalysts journal May 2012
Inter- and Intramolecular Addition/Cyclizations of Sulfonamide Anions with Alkynyliodonium Triflates. Synthesis of Dihydropyrrole, Pyrrole, Indole, and Tosylenamide Heterocycles journal January 1996
Microwave Effects in Organic Synthesis: Myth or Reality? journal December 2012
Rh-Catalyzed Amination of Ethereal CαH Bonds: A Versatile Strategy for the Synthesis of Complex Amines journal August 2004
Recent Advances in Catalytic Intramolecular CH Aminations journal June 2005
A Copper(II)-Catalyzed Aza-Friedel-Crafts Reaction ofN-(2-Pyridyl)sulfonyl Aldimines: Synthesis of Unsymmetrical Diaryl Amines and Triaryl Methanes journal January 2006
Metal-free, highly efficient organocatalytic amination of benzylic C–H bonds journal January 2013
δ and α SP 3 C−H Bond Oxidation of Sulfonamides with PhI(OAc) 2 /I 2 under Metal-Free Conditions journal November 2007
Construction of 3-oxyindoles via hypervalent iodine mediated tandem cyclization–acetoxylation of o-acyl anilines journal January 2010
Intermolecular Hydrogen Abstraction Reaction between Nitrogen Radicals in Purine Rings and Alkyl Ethers: A Highly Selective Method for the Synthesis of N-9 Alkylated Purine Nucleoside Derivatives journal January 2011
Metal-free α-CH amination of ethers with hypervalent sulfonylimino-λ3-bromane that acts as an active nitrenoid journal January 2012
Unraveling the Mysteries of Microwave Chemistry Using Silicon Carbide Reactor Technology journal March 2013
Enantioselective Metal-Free Diamination of Styrenes journal August 2011
Metal-free oxidative synthesis of quinazolinones via dual amination of sp 3 C–H bonds journal January 2014
Microwaves in organic synthesis. Thermal and non-thermal microwave effects journal January 2005
Sulfonamidoglycosylation of methyl ribofuranosides: a novel approach to furanosylsulfonamides journal March 2005
Mild Metal-Free Sequential Dual Oxidative Amination of C(sp 3 )–H bonds: Efficient Synthesis of Imidazo[1,5- a ]pyridines journal April 2013
Metal-Catalyzed Nitrogen-Atom Transfer Methods for the Oxidation of Aliphatic C–H Bonds journal January 2012
Intermolecular Oxidative C–N Bond Formation under Metal-Free Conditions: Control of Chemoselectivity between Aryl sp 2 and Benzylic sp 3 C–H Bond Imidation journal October 2011
Rh-, Ag-, and Cu-Catalyzed C-N Bond Formation book January 2012
Iodine-Catalyzed Amination of Benzoxazoles: A Metal-Free Route to 2-Aminobenzoxazoles under Mild Conditions journal October 2011
Structure−Activity Relationship Studies on N 3 -Substituted Willardiine Derivatives Acting as AMPA or Kainate Receptor Antagonists journal April 2006
Study on Radical Amidation onto Aromatic Rings with (Diacyloxyiodo)arenes journal July 1998
N ‐Tosyloxycarbamates as Reagents in Rhodium‐Catalyzed CH Amination Reactions journal July 2008
Catalytic C–H amination: recent progress and future directions journal January 2009
Metal-Free Intermolecular Oxidative C–N Bond Formation via Tandem C–H and N–H Bond Functionalization journal December 2011
A Novel Sulfonamidoglycosylation of Glycals journal November 2003
Rhodium-Catalyzed C-H Aminations book October 2010
Heterobimetallic Ir–Sn catalysis: aza-Friedel–Crafts reaction of N-sulfonyl aldimines journal April 2013
Catalytic C-H Amination with Nitrenes book November 2007
n-Bu 4 NI/TBHP-catalyzed direct amination of allylic and benzylic C(sp 3 )–H with anilines under metal-free conditions journal January 2014
Defined Hypervalent Iodine(III) Reagents Incorporating Transferable Nitrogen Groups: Nucleophilic Amination through Electrophilic Activation journal December 2012
Metal-free N-iodosuccinimide-catalyzed mild oxidative C–H bond amination of benzoxazoles journal July 2012
Copper-Catalyzed sp 3 C–H Amination journal August 2012
Friedel−Crafts Arylation Reactions of N -Sulfonyl Aldimines or Sulfonamidesulfones with Electron-Rich Arenes Catalyzed by FeCl 3 ·6H 2 O: Synthesis of Triarylmethanes and Bis-heteroarylarylmethanes journal August 2010
Synthesis, Structure, and Reaction of 1-Alkynyl(aryl)-λ 3 -bromanes journal December 2003
In vitro antitumor activity of N-glycosyl sulfonamides journal November 2010
Metal-Free Oxidative Carbon-Heteroatom Bond Formation Through C-H Bond Functionalization: Metal-Free Oxidative Carbon-Heteroatom Bond Formation journal June 2013
Intramolecular Oxidative Diamination and Aminohydroxylation of Olefins under Metal-Free Conditions journal February 2012
Iodine(III)-Promoted Intermolecular Diamination of Alkenes journal March 2012
Synthesis of benzosultams via an intramolecular sp 2 C–H bond amination reaction of o-arylbenzenesulfonamides under metal-free conditions journal January 2014
Selective Monooxidation of Light Alkanes Using Chloride and Iodate journal May 2014
Amination of ethers using chloramine-T hydrate and a copper(i) catalyst journal January 2005
Recent advances in transition metal-catalyzed sp 3 C–H amination adjacent to double bonds and carbonyl groups journal January 2012
Transition-metal-free Benzylic C–H Bond Intermolecular Amination Utilizing Chloramine-T and I 2 journal December 2012
An Efficient Oxidative Cross-Coupling Reaction between C-H and N-H Bonds; A Transition-Metal-Free Protocol at Room Temperature journal August 2013
A Metal-Free Route to 2-Aminooxazoles by Taking Advantage of the Unique Ring Opening of Benzoxazoles and Oxadiazoles with Secondary Amines journal June 2011
Advances in the Direct Amination of Azole C-H Bonds journal September 2011
Oxidation of Dibenzyl Ethers by Dilute Nitric Acid journal March 2001
Transition-Metal-Free Intermolecular Amination of sp 3 C−H Bonds with Sulfonamides journal March 2009
Iodine(III)-Mediated Intermolecular Allylic Amination under Metal-Free Conditions journal April 2012
A Copper(II)-Catalyzed Aza-Friedel-Crafts Reaction ofN-(2-Pyridyl)sulfonyl Aldimines: Synthesis of Unsymmetrical Diaryl Amines and Triaryl Methanes journal January 2006
Amination of Ethers Using Chloramine-T Hydrate and a Copper(I) Catalyst. journal May 2005
Microwaves in Organic Synthesis. Thermal and Non-Thermal Microwave Effects journal May 2005
Sulfonamidoglycosylation of Methyl Ribofuranosides: A Novel Approach to Furanosylsulfonamides. journal June 2005
Recent Advances in Catalytic Intramolecular C—H Aminations journal September 2005
N-Tosyloxycarbamates as a Source of Metal Nitrenes: Rhodium-Catalyzed C—H Insertion and Aziridination Reactions. journal February 2006
A Novel Sulfonamidoglycosylation of Glycals. journal March 2004
Rh-Catalyzed Amination of Ethereal Cα—H Bonds: A Versatile Strategy for the Synthesis of Complex Amines. journal December 2004
α-Amidation of Cyclic Ethers Catalyzed by Simple Copper Salt and a Mild and Efficient Preparation Method for α,ω-Amino Alcohols. journal October 2007
Rh-Catalyzed Amination of Ethereal CαH Bonds: A Versatile Strategy for the Synthesis of Complex Amines journal August 2004
α-Amidation of Cyclic Ethers Catalyzed by Simple Copper Salt and a Mild and Efficient Preparation Method for α,ϖ-Amino Alcohols journal November 2013
Oxidation of Benzylic Alcohols and Ethers to Carbonyl Derivatives by Nitric Acid in Dichloromethane. journal June 2003

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Copper-catalyzed oxidative intermolecular 1,2-alkylarylation of styrenes with ethers and indoles journal January 2018
Direct functionalization of alkyl ethers to construct hemiaminal ether skeletons (HESs) journal January 2018
Photochemical C−H Amination of Ethers and Geminal Difunctionalization Reactions in One Pot journal September 2019