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Title: Scope and Mechanism of Cooperativity at the Intersection of Organometallic and Supramolecular Catalysis

Journal Article · · Journal of the American Chemical Society
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemistry

Here, the scope and mechanism of the microenvironment-catalyzed C(sp3)-C(sp3) reductive elimination from transition metal complexes [Au(III), Pt(IV)] is explored. Experiments detailing the effect of structural perturbation of neutral and anionic spectator ligands, reactive alkyl ligands, solvent, and catalyst structure are disclosed. Indirect evidence for a coordinatively unsaturated encapsulated cationic intermediate is garnered via observation of several inactive donor-arrested inclusion complexes, including a crystallographically characterized encapsulated Au(III) cation. Finally, based on stoichiometric experiments under catalytically relevant conditions, a detailed mechanism is outlined for the dual supramolecular and platinum-catalyzed C-C coupling between methyl iodide and tetramethyltin. Determination of major platinum species present under catalytic conditions and subsequent investigation of their chemistry reveals an unexpected interplay between cis-trans isomerism and the supramolecular catalyst in a Pt(II)/Pt(IV) cycle, as well as several off-cycle reactions.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Institutes of Health (NIH); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; R01 GM073932; DGE 1106400
OSTI ID:
1464140
Journal Information:
Journal of the American Chemical Society, Vol. 138, Issue 30; Related Information: © 2016 American Chemical Society.; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 77 works
Citation information provided by
Web of Science

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Coordination‐Cage‐Catalysed Hydrolysis of Organophosphates: Cavity‐ or Surface‐Based? journal February 2020
A Zn 4 L 6 Capsule with Enhanced Catalytic C−C Bond Formation Activity upon C 60 Binding journal May 2019
Elucidating the Importance of Hydrochloric Acid as a Cocatalyst for Resorcinarene-Capsule-Catalyzed Reactions journal May 2018
Catalytic Intramolecular Cycloaddition Reactions by Using a Discrete Molecular Architecture journal October 2017
Programmable self-assembly of water-soluble organo-heterometallic cages [M 12 M′ 4 L 12 ] using 3-(3,5-dimethyl-1H-pyrazol-4-yl)pentane-2,4-dione (H 2 L) journal January 2017
Synthesis of stable polymetalated aromatic complexes through metal–macrocycle capsule-triggered cyclization journal January 2018
Measuring ion-pairing and hydration in variable charge supramolecular cages with microwave microfluidics journal May 2019
Strategies for binding multiple guests in metal–organic cages journal March 2019
Gold‐catalyzed Cycloisomerization Reactions within Guanidinium M 12 L 24 Nanospheres: the Effect of Local Concentrations journal February 2019
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Binding of anions in triply interlocked coordination catenanes and dynamic allostery for dehalogenation reactions journal January 2018
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Sesquiterpene Cyclizations inside the Hexameric Resorcinarene Capsule: Total Synthesis of δ‐Selinene and Mechanistic Studies journal July 2019
Encapsulation of a Quinhydrone Cofactor in the Inner Pocket of Cobalt Triangular Prisms: Combined Light-Driven Reduction of Protons and Hydrogenation of Nitrobenzene journal November 2017
Electrostatic decoupling of periodic images of plane‐wave‐expanded densities and derived atomic point charges journal November 1995
Elucidating the Importance of Hydrochloric Acid as a Cocatalyst for Resorcinarene-Capsule-Catalyzed reactions text January 2018
Sesquiterpene Cyclizations inside the Hexameric Resorcinarene Capsule: Total Synthesis of δ‐Selinene and Mechanistic Studies text January 2019
A Zn 4 L 6 Capsule with Enhanced Catalytic C−C Bond Formation Activity upon C 60 Binding journal May 2019
Sesquiterpene Cyclizations inside the Hexameric Resorcinarene Capsule: Total Synthesis of δ‐Selinene and Mechanistic Studies journal September 2019
Cover Feature: Coordination‐Cage‐Catalysed Hydrolysis of Organophosphates: Cavity‐ or Surface‐Based? (Chem. Eur. J. 14/2020) journal February 2020
A Zn 4 L 6 Capsule with Enhanced Catalytic C−C Bond Formation Activity upon C 60 Binding text January 2019
Interplay of Water and a Supramolecular Capsule for Catalysis of Reductive Elimination Reaction from Gold preprint January 2019
Gold Catalysis in (Supra)Molecular Cages to Control Reactivity and Selectivity journal October 2018
Gold‐catalyzed Cycloisomerization Reactions within Guanidinium M 12 L 24 Nanospheres: the Effect of Local Concentrations journal February 2019
Coordination‐Cage‐Catalysed Hydrolysis of Organophosphates: Cavity‐ or Surface‐Based? journal February 2020
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Figures / Tables (18)