A General Strategy for Aliphatic C–H Functionalization Enabled by Organic Photoredox Catalysis
摘要:
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.
[EN] ISOTOPIC FLUORINATION AND APPLICATIONS THEREOF<br/>[FR] FLUORATION ISOTOPIQUE ET SES APPLICATIONS
申请人:UNIV PRINCETON
公开号:WO2017106340A1
公开(公告)日:2017-06-22
Methods of C-H bond fluorination using non-heme manganese catalyst are described herein. For example, a method comprises providing a reaction mixture including a non-heme manganese catalyst, a substrate comprising an sp3 C-H bond and a fluorinating agent and converting the sp3 C-H bond to a C-F bond in the presence of the non-heme manganese catalyst or a derivative thereof.