2-Amino-1,2,2-triphenylethanol: A Novel Chiral Reagent Containing the Diphenylaminomethyl Group. Enantioselective Addition of Diethylzinc to Benzaldehyde
作者:Ralf Fleischer、Manfred Braun
DOI:10.1055/s-1998-1953
日期:1998.12
The novel chiral amino alcohols (R)- and (S)-1 are prepared from the corresponding enantiomer of ethanediol 2. Alkoxytitanium complexes of the imines 8 derived from 1 are suitable to catalyze the addition of diethylzinc to benzaldehyde in up to 92% e.e.