A series of chiral oxazolidines derived from (1R, 2S)-cis-1-amino-2-indanol was found to be effective in
promoting the asymmetric addition of diethylzinc to aldehydes. Among the ligands developed, it was found that ligand 1b
in the presence of Ti(OiPr)4 yielded the highest enantioselectivities when it was applied in the catalytic asymmetric addition
of diethylzinc to aldehydes (up to 91% ee).
一系列源自(1R, 2S)-顺式-1-
氨基-2-印啉醇的手性
噁唑烷被发现对促进
二乙基锌与醛的非对称加成有效。在开发的
配体中,发现
配体1b在Ti(OiPr)4的存在下,在催化
二乙基锌与醛的非对称加成中获得了最高的对映选择性(可达91% ee)。