Highly Enantioselective Epoxidation Catalyzed by Cinchona Thioureas: Synthesis of Functionalized Terminal Epoxides Bearing a Quaternary Stereogenic Center
作者:Alessio Russo、Gerardina Galdi、Gianluca Croce、Alessandra Lattanzi
DOI:10.1002/chem.201200500
日期:2012.5.14
A brilliant debut! Cinchona thioureas have been reported for the first time as catalysts in the area of asymmetric oxidations. They efficiently promote an unprecedented highly enantioselective epoxidation of deactivated 1,1‐disubstituted alkenes to terminal epoxides containing a quaternary stereogenic center (see scheme).
辉煌的首次亮相!金鸡纳硫脲首次被报道为不对称氧化领域的催化剂。它们有效地促进了失活的1,1-二取代烯烃前所未有的高度对映选择性环氧化,形成具有季立体中心的末端环氧化物(请参见方案)。