Highly diastereoselective asymmetric aldol reactions of chiral Ni(II)-complex of glycine with alkyl trifluoromethyl ketones
作者:Vadim A. Soloshonok、Dimitry V. Avilov、Valery P. Kukhar'
DOI:10.1016/0957-4166(96)00177-2
日期:1996.6
Asymmetric aldol reactions between prochiral trifluoromethyl ketones and Ni(II)-complex of monochiral Schiff base of glycine with (S)-o-[N-(N-benzylprolyl)amino]benzophenone (BBP) are described. General stereodirecting features of the trifluoromethyl group controlling (2S,3S)-absolute configuration (90-98 %de) of the resultant amino acids is demonstrated. New set of reaction conditions allowing preparative synthesis of diastereo, and enantiomerically pure (2S,3S)-3-trifluoromethyl-3-substituted serines of biomedicinal interest is presented. (C) 1996 Elsevier Science Ltd