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.
Synthesis of Enantioenriched (<i>Z</i>)-Disubstituted Allylic Alcohols via Ru-Catalyzed Selective Dehydrogenation
作者:Dongxu He、Donghao Wang、Chen Xu、Xiangyou Xing
DOI:10.1021/acs.joc.3c00986
日期:2023.7.21
A highly efficient kinetic resolution of allylicalcohols with Z/E mixtures was achieved via Ru-catalyzed selective dehydrogenation. Not only allylicalcohols were obtained with pure Z-geometry, but the corresponding selectivity factors rank among the few highest for kinetic resolution reported in the literature.