Kinetic Resolution of Racemic Allylic Alcohols by Catalytic Asymmetric Substitution of the OH Group with Monosubstituted Hydrazines
作者:Liang Yan、Jing-Kun Xu、Chao-Fan Huang、Zeng-Yang He、Ya-Nan Xu、Shi-Kai Tian
DOI:10.1002/chem.201601747
日期:2016.9.5
A new strategy has been established for the kinetic resolution of racemic allylic alcohols through a palladium/sulfonyl‐hydrazide‐catalyzed asymmetric OH‐substitution under mild conditions. In the presence of 1 mol % [Pd(allyl)Cl]2, 4 mol % (S)‐SegPhos, and 10 mol % 2,5‐dichlorobenzenesulfonyl hydrazide, a range of racemic allylic alcohols were smoothly resolved with selectivity factors of more than
已经建立了一种新的策略,用于在温和条件下通过钯/磺酰肼催化的不对称OH取代来动力学拆分外消旋烯丙醇。在1摩尔%的存在下[加入Pd(烯丙基)CL] 2,4摩尔%(小号)-segphos,和10%(摩尔)2,5-二氯苯肼,一个范围外消旋烯丙基醇与多选择性因素进行顺利解决通过在室温下在空气中单取代的肼的不对称烯丙基烷基化反应得到大于400的碳原子数。重要的是,该动力学拆分方法提供了具有高对映体纯度的各种烯丙基醇和烯丙基肼衍生物。