Photo-organocatalytic Enantioselective Perfluoroalkylation of β-Ketoesters

J Am Chem Soc. 2015 May 6;137(17):5678-81. doi: 10.1021/jacs.5b03243. Epub 2015 Apr 24.

Abstract

The visible-light-driven, phase-transfer-catalyzed, enantioselective perfluoroalkylation and trifluoromethylation of cyclic β-ketoesters is described. The photo-organocatalytic process, which occurs at ambient temperature and under visible light illumination, is triggered by the photochemical activity of in situ-generated electron donor-acceptor complexes, arising from the association of chiral enolates and perfluoroalkyl iodides. Preliminary mechanistic studies are reported.