Synthesis of <i>Z</i>- or <i>E</i>-Trisubstituted Allylic Alcohols and Ethers by Kinetically Controlled Cross-Metathesis with a Ru Catechothiolate Complex
作者:Chaofan Xu、Zhenxing Liu、Sebastian Torker、Xiao Shen、Dongmin Xu、Amir H. Hoveyda
DOI:10.1021/jacs.7b10010
日期:2017.11.8
kinetically controlled cross-metathesis reactions that generate Z- or E-trisubstituted alkenes are disclosed. Transformations are catalyzed by ≤6.0 mol % of a Ru catechothiolate complex and afford trisubstituted allylic alcohols and ethers in up to 81% yield and >98% stereoisomeric purity. The method has considerable scope, as olefins containing an alcohol, an aldehyde, an epoxide, a carboxylic acid, or an
公开了产生Z-或E-三取代烯烃的动力学控制的交叉复分解反应的第一个例子。转化由≤6.0 mol% 的儿茶酚硫醇络合物催化,并以高达 81% 的产率和 >98% 的立体异构纯度提供三取代的烯丙醇和醚。该方法具有相当大的范围,因为可以使用含有醇、醛、环氧化物、羧酸或烯基的烯烃。基于 DFT 研究,提供了解释效率和立体化学控制中观察到的水平和趋势的机械模型。