Practical Methods for the Synthesis of Trifluoromethylated Alkynes: Oxidative Trifluoromethylation of Copper Acetylides and Alkynes

Abstract

Abstract Two practical and complementary methods are reported for the synthesis of trifluoromethylated alkynes. The first one, a mix‐and‐stir process, is based on the oxidative trifluoromethylation of readily available and bench‐stable copper acetylides while the second one, which displays a broad substrate scope and has several advantages over existing procedures, is based on the oxidative copper‐catalyzed direct trifluoromethylation of terminal alkynes. Both reactions provide user‐friendly processes for the synthesis of trifluoromethylated acetylenes which can be easily obtained from readily available starting materials. magnified image