Redox-Neutral Decarboxylative and Desulfonylative C(sp3) Trifluoromethylation: Method Development and Mechanistic Inquiry

J Org Chem. 2023 Jul 19. doi: 10.1021/acs.joc.3c00872. Online ahead of print.

Abstract

Sodium triflinate (CF3SO2Na) is an inexpensive bench-stable radical CF3 source that is often activated by external oxidants such as peroxides. However, despite the commercial accessibility of CF3SO2Na, the salt has never been applied to decarboxylative trifluoromethylation due to challenges in controlled cross-radical coupling. We report a redox-neutral approach to decarboxylative C(sp3) trifluoromethylation of carboxylic acid derivatives. Mechanistic inquiry is performed to address the limitations in scope.