One‐Pot Synthesis of Chiral α‐Substituted β,γ‐Epoxy Aldehyde Derivatives through an Asymmetric Aldol Reaction of Chloroacetaldehyde
作者:Yujiro Hayashi、Yusuke Yasui、Tsuyoshi Kawamura、Masahiro Kojima、Hayato Ishikawa
DOI:10.1002/anie.201005577
日期:2011.3.14
Water is welcome! Chiral α‐substituted β,γ‐epoxides have been prepared in good yields and with excellent enantioselectivities in a one‐pot synthetic procedure. The key reaction of this process, which involves a series of uninterrupted sequential reactions, is an asymmetric aldol reaction of aqueous chloroacetaldehyde mediated by a diarylprolinol derivative (see scheme).
欢迎水!通过一锅法合成方法制备了高收率且具有出色对映选择性的手性α-取代的β,γ-环氧化物。该方法的关键反应涉及一系列不间断的顺序反应,是由二芳基脯氨醇衍生物介导的氯乙醛水溶液的不对称醛醇缩合反应(参见方案)。