Enantioselective addition of (Z)- and (E)-alkenylzinc bromides to aldehydes: asymmetric synthesis of sec-allylalcohols
作者:Wolfgang Oppolzer、Rumen N. Radinov
DOI:10.1016/s0040-4039(00)93553-6
日期:1991.10
In situ prepared (Z)- and (E)-1-alkenylzinc bromides 5 were added to various aldehydes 1 in the presence of lithiated (+)-N-methylephedrine or (+)-2-(N,N-dimethylamino)-1,2-diphenylethanol to give sec. allyalcohols 7 in high optical purity with simple recovery of the chiral aminol 6.
在锂化的(+)- N-甲基麻黄碱或(+)-2-(N,N-二甲基氨基)-的存在下,将原位制备的(Z)-和(E)-1-烯基溴化锌5添加到各种醛1中。 1,2-二苯乙醇给出sec。高光学纯度的烯丙基醇7与手性氨基6的简单回收。