Effect of A(1,3)-cis strain on the asymmetric epoxidation of (E)- and (Z)-6,6-diethoxy-3-hexen-2-ols and 4-methyl-6,6-diethoxy-3-hexen-2-ols
作者:Antonia A. Nikitenko、Boris M. Arshava、Irina G. Taran、Igor E. Mikerin、Vitaly I. Shvets、Yuri E. Raifeld、Stanley A. Lang、Ving J. Lee
DOI:10.1016/s0040-4020(98)83034-2
日期:1998.9
The effect of A((1,3))-cis strain on the diastereoselectivity of epoxidation of (E)-and (Z)-6,6-diethoxy-3-hexen-2-ols and 4-methyl-6,6-diethoxy-3-hexen-2-ols is analyzed, with some empiric observations provided. Increased A((1,3))-cis strain results in increased amounts of racemic threo-epoxy alcohols, while high ee's are found for the erythro-epoxy alcohols. (C) 1998 Elsevier Science Ltd. All rights reserved.