A parallel preparation of a bicyclic N-chiral amine library and its use for chiral catalyst screening
作者:Yasuhiro Uozumi、Kanako Mizutani、Shin-ichi Nagai
DOI:10.1016/s0040-4039(00)01975-4
日期:2001.1
A parallel library of optically active bicyclic tertiary amines bearing N-chiral bridgehead nitrogen atoms was readily prepared by condensation of primary amines, cyclic amino acids and aldehydes. The enantiocontrolling ability of each of the library members was examined for the asymmetric alkylation of benzaldehyde with diethylzinc, and (3R,6R,7aS)-(2,3-diphenyl-6-hydroxy)hexahydro-1H-pyrrolo[1,2-c]imidazol-1-one
通过伯胺,环状氨基酸和醛的缩合,可以容易地制备带有N-手性桥头氮原子的光学活性双环叔胺的平行文库。考察了每个库成员对苯甲醛与二乙基锌和(3 R,6 R,7a S)-(2,3-二苯基-6-羟基)六氢-1 H-吡咯并[的不对称烷基化的对映控制能力。含有β-氨基醇单元的1,2 - c ]咪唑-1-酮显示出高对映选择性。