摘要:
A visible-light mediated approach to radical difluoromethylation of 3- and 3,5-substituted indoles was investigated using a readily synthesized difluoromethyl source, CF2HPPh3Br. Direct difluoromethylation of indoles in the two position is a rare feat in the literature. The reactions were conducted at room temperature, using Ir (ppy)(3) as photocatalyst in acetone, to afford the 2-difluoromethyl indoles in relatively low to moderate yields.