2-氟苯胺 、 氧化环己烯 在
(R)-2-hydroxy-4-penylbutanoic acid onto PCN-222(Cu) synthesized from ZrCl4 and 5,10,15,20-[tetrakis(4-carboxyphenyl)porphyrinato]-Cu(II) and benzoic acid 作用下,
以
甲苯 为溶剂,
以58%的产率得到
参考文献:
名称:
通过赋予手性微环境开启非手性金属有机框架的不对称催化
摘要:
MOF PCN-222(Cu) 中催化活性金属簇周围的手性微环境是通过简单地接枝手性分子 ( R )−C n −COOH ( n =1, 2, 3) 来创建的。由于微环境引起的氢相互作用、空间位阻和限域效应等多级调节,所得的( R )−C n @PCN-222(Cu)在环己烯的不对称开环中表现出高活性和对映选择性与苯胺氧化。
The Zn(OTf)2-SDS-bipyridine 1 system has proved to be an effective catalyst in water for the desymmetrization of epoxides 2a-d by anilines 3a-d. After obtaining comparable results by using Sc(III)-SDS and Zn(II)-SDS systems in the case of 2a and 3a, we have explored the enantioselective ring opening of small epoxides for which water has never been used as reaction medium. Up to date the 85% ee obtained in the case of cyclohexene oxide 2b with amines 3a and 3d are very good results and are the highest values obtained in water as reaction medium.