Chloride-Bridged Dinuclear Rhodium(III) Complexes Bearing Chiral Diphosphine Ligands: Catalyst Precursors for Asymmetric Hydrogenation of Simple Olefins
作者:Yusuke Kita、Shoji Hida、Kenya Higashihara、Himanshu Sekhar Jena、Kosuke Higashida、Kazushi Mashima
DOI:10.1002/anie.201601748
日期:2016.7.11
were developed for asymmetric hydrogenation of simple olefins. A new series of chloride‐bridged dinuclear rhodium(III) complexes 1 were synthesized from the rhodium(I) precursor [RhCl(cod)]2, chiral diphosphine ligands, and hydrochloric acid. Complexes from the series acted as efficient catalysts for asymmetric hydrogenation of (E)‐prop‐1‐ene‐1,2‐diyldibenzene and its derivatives without any directing
开发了有效的铑(III)催化剂用于简单烯烃的不对称氢化。从铑(I)前体[RhCl(cod)] 2,手性二膦配体和盐酸合成了一系列新的氯化物桥连的双核铑(III)配合物1。该系列的配合物作为(E)不对称加氢的有效催化剂。)丙-1-烯-1,2-二基二苯及其衍生物没有任何导向基团,与广泛使用的铑(I)催化体系形成鲜明的对比,铑催化体系需要一个具有高对映选择性的导向基团。该催化体系用于烯丙基醇,烯基硼烷和不饱和环状砜的不对称氢化。对照实验支持双核铑(III)配合物1优于典型的铑(I)催化系统。