Trifluoromethyl aldimines reacted with acetylides in toluene at -78 degrees C to provide propargyl amines in good yields. From a chiral trifluoromethyl aldimine, the propargyl amines were obtained with excellent diastereoselectivities (de > 98%). Trifluoromethyl propargyl amines could be further converted into difluoromethyl imines under basic conditions. (c) 2005 Elsevier Ltd. All rights reserved.
Stereoselective Access to Substituted [(E)- or (Z)-1-(Trifluoromethyl)allyl]amines