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摘要
Three new chiral ligands, (S)-3-(1H-imidazol-1-yl)methyl-1,1'-binaphthol [(S)-1], (S)-3-(1H-1,2,3-benzotriazol-1-yl)methyl-1,1'-binaphthol [(S)-2] and (S)-3-(2H-1,2,3-benzotriazol-2-yl)methyl-1,1'-binaphthol [(S)-3], were prepared by a simple method. They showed moderate catalytic properties for the asymmetric addition of diethylzinc to benzaldehyde in the presence of titanium tetraisopropoxide.
