New synthesis of trifluorinated amines from 1-bromopropargylic amines in superacid

Treatment of 1-bromopropargylic amines affords the corresponding 1,1,1-trifluoro in one step in HF-SbF5 medium. 1-Bromo-1,1-difluoro or 2-bromo-1,1,1-trifluoro derivatives could also be prepared, depending on the reaction conditions.