Organocatalytic Oxyamination of Azlactones: Kinetic Resolution of Oxaziridines and Asymmetric Synthesis of Oxazolin-4-ones
作者:Shunxi Dong、Xiaohua Liu、Yin Zhu、Peng He、Lili Lin、Xiaoming Feng
DOI:10.1021/ja404379n
日期:2013.7.10
example of oxyamination of azlactones with oxaziridines was realized using a chiral bisguanidinium salt. Efficient catalytic asymmetric oxyamination and kinetic resolution of oxaziridines occurred simultaneously. Various chiral oxazolin-4-one derivatives with potential biological activity were obtained (up to 92% ee). Meanwhile, a series of optically pure oxaziridines were recovered with up to 99% ee and
使用手性双胍盐实现吖内酯与恶氮丙啶氧胺化的第一个实例。氧氮丙啶的高效催化不对称氧化胺化和动力学拆分同时发生。获得了具有潜在生物活性的各种手性 oxazolin-4-one 衍生物(高达 92% ee)。同时,回收了一系列光学纯氧氮杂环丙烷,ee 高达 99%,并成功用于 3-甲基-1H-吲哚和苯乙烯的不对称氧化胺化。还通过对照实验研究了三重立体分化过程。