Asymmetric aziridination: a new entry to optically active non-N-protected aziridines
作者:Hirotoshi Kawabata、Kazufumi Omura、Tsutomu Katsuki
DOI:10.1016/j.tetlet.2005.12.124
日期:2006.3
to catalyze asymmetric aziridination using azide compounds carrying p-nitrobenzenesulfonyl and 2-(trimethylsilyl)ethanesulfonyl (SES) groups, which are easily removable N-protecting groups under mild conditions, as a nitrene precursor in a highly enantioselective manner. In particular, the reactions with SES azide showed excellent enantioselectivity greater than 90% ee, except for one example.
发现一种新设计的坚固耐用的Ru(salen)(CO)配合物3可使用带有对硝基苯磺酰基和2-(三甲基甲硅烷基)乙磺酰基(SES)的叠氮化合物催化不对称叠氮化,这些化合物在温和条件下很容易去除N-保护基,以高度对映选择性的方式作为腈前体。特别地,除了一个实例之外,与SES叠氮化物的反应显示出大于90%ee的优异的对映选择性。