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A General Strategy for Aliphatic C-H Functionalization Enabled by Organic Photoredox Catalysis.

ABSTRACT: Synthetic transformations that functionalize unactivated aliphatic C-H bonds in an intermolecular fashion offer unique strategies for the synthesis and late-stage derivatization of complex molecules. Herein we report a general approach to the intermolecular functionalization of aliphatic C-H bonds using an acridinium photoredox catalyst and phosphate salt under blue LED irradiation. This strategy encompasses a range of valuable C-H transformations, including the direct conversions of a C-H bond to C-N, C-F, C-Br, C-Cl, C-S, and C-C bonds, in all cases using the alkane substrate as the limiting reagent. Detailed mechanistic studies are consistent with the intermediacy of a putative oxygen-centered radical as the hydrogen atom-abstracting species in these processes.

SUBMITTER: Margrey KA

PROVIDER: S-EPMC5891731 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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A General Strategy for Aliphatic C-H Functionalization Enabled by Organic Photoredox Catalysis.

Margrey Kaila A KA Czaplyski William L WL Nicewicz David A DA Alexanian Erik J EJ

Journal of the American Chemical Society 20180316 12

Synthetic transformations that functionalize unactivated aliphatic C-H bonds in an intermolecular fashion offer unique strategies for the synthesis and late-stage derivatization of complex molecules. Herein we report a general approach to the intermolecular functionalization of aliphatic C-H bonds using an acridinium photoredox catalyst and phosphate salt under blue LED irradiation. This strategy encompasses a range of valuable C-H transformations, including the direct conversions of a C-H bond ...[more]

PMID: 29522330

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