From a Sequential to a Concurrent Reaction in Aqueous Medium: Ruthenium-Catalyzed Allylic Alcohol Isomerization and Asymmetric Bioreduction
作者:Nicolás Ríos-Lombardía、Cristian Vidal、Elisa Liardo、Francisco Morís、Joaquín García-Álvarez、Javier González-Sabín
DOI:10.1002/anie.201601840
日期:2016.7.18
The ruthenium‐catalyzed redox isomerization of allylic alcohols was successfully coupled with the enantioselective enzymatic ketone reduction (mediated by KREDs) in a concurrent process in aqueous medium. The overall transformation, formally the asymmetric reduction of allylic alcohols, took place with excellent conversions and enantioselectivities, under mild reaction conditions, employing commercially
在水性介质中同时进行的钌催化的烯丙醇氧化还原异构化与对映选择性酶酮还原(由KRED介导)成功地结合在一起。在温和的反应条件下,采用可商购和容易获得的催化体系,并且没有外部辅酶或辅因子,总转化,即烯丙基醇的不对称还原,以优异的转化率和对映选择性进行。优化导致了多步骤方法和真正的级联反应,其中金属催化剂和生物催化剂从一开始就共存。