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Oxidant-Free Au(I)-Catalyzed Halide Exchange and Csp2-O Bond Forming Reactions

Au has been demonstrated to mediate a number of organic transformations through the utilization of its π Lewis acid character, Au(I)/Au(III) redox properties or a combination of both. As a result of the high oxidation potential of the Au(I)/Au(III) couple, redox catalysis involving Au typically requires the use of a strong external oxidant. This study demonstrates unusual external oxidant-free Au(I)-catalyzed halide exchange (including fluorination) and Csp2-O bond formation reactions utilizing a model aryl halide macrocyclic substrate. Additionally, the halide exchange and Csp2-O coupling reactivity could also be extrapolated to substrates bearing a single chelating group, providing further insight into the reaction mechanism. This work provides the first examples of external oxidant-free Au(I)-catalyzed carbon-heteroatom cross-coupling reactions

This work was supported by grants from the European Research Council (Starting Grant Project ERC-2011-StG-277801), the Spanish MINECO (CTQ2013-43012-P, Consolider-Ingenio CSD2010-00065, INNPLANTA project INP-2011-0059-PCT- 420000-ACT1) and Generalitat de Catalunya (2014 SGR 862)

American Chemical Society (ACS)

Manager: Ministerio de Ciencia e Innovación (Espanya)
Generalitat de Catalunya. Agència de Gestió d’Ajuts Universitaris i de Recerca
Ministerio de Economía y Competitividad (Espanya)
Author: Serra i Parareda, Jordi
Whiteoak, Christopher J.
Acuña-Parés, Ferran
Font Molins, Marc
Luis Luis, Josep Maria
Lloret Fillol, Julio
Ribas Salamaña, Xavi
Abstract: Au has been demonstrated to mediate a number of organic transformations through the utilization of its π Lewis acid character, Au(I)/Au(III) redox properties or a combination of both. As a result of the high oxidation potential of the Au(I)/Au(III) couple, redox catalysis involving Au typically requires the use of a strong external oxidant. This study demonstrates unusual external oxidant-free Au(I)-catalyzed halide exchange (including fluorination) and Csp2-O bond formation reactions utilizing a model aryl halide macrocyclic substrate. Additionally, the halide exchange and Csp2-O coupling reactivity could also be extrapolated to substrates bearing a single chelating group, providing further insight into the reaction mechanism. This work provides the first examples of external oxidant-free Au(I)-catalyzed carbon-heteroatom cross-coupling reactions
This work was supported by grants from the European Research Council (Starting Grant Project ERC-2011-StG-277801), the Spanish MINECO (CTQ2013-43012-P, Consolider-Ingenio CSD2010-00065, INNPLANTA project INP-2011-0059-PCT- 420000-ACT1) and Generalitat de Catalunya (2014 SGR 862)
Document access: http://hdl.handle.net/2072/297433
Language: eng
Publisher: American Chemical Society (ACS)
Rights: Tots els drets reservats
Subject: Mecanismes de reacció (Química)
Reaction mechanisms (Chemistry)
Reaccions químiques
Chemical reactions
Catàlisi
Catalysis
Title: Oxidant-Free Au(I)-Catalyzed Halide Exchange and Csp2-O Bond Forming Reactions
Type: info:eu-repo/semantics/article
Repository: Recercat

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