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2005
Amines
Q 0120
29- 084
Direct Access to CF3-Propargyl Amines and Conversion to Difluoromethyl Imines. — The use of aldimines (I) derived from fluoral for the synthesis of fluorinated
compounds is described. Their reaction with lithium acetylides yields trifluoromethylpropargyl amines. A chiral version of the reaction proceeds with excellent stereoselectivity. Interestingly, treatment of the amine (IIIc) with an excess of base produces an
interesting difluoromethyl imine which can be reduced to a difluoromethyl propargyl
amine. — (MAGUEUR, G.; CROUSSE*, B.; BONNET-DELPON, D.; Tetrahedron
Lett. 46 (2005) 13, 2219-2221; BIOCIS-CNRS, Fac. Pharm., Univ. Paris-Sud,
F-92296 Chatenay-Malabry, Fr.; Eng.) — Mais
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