Bioinspired Manganese and Iron Complexes with Tetradentate N Ligands for the Asymmetric Epoxidation of Olefins
作者:Xiaoe Wang、Chengxia Miao、Shoufeng Wang、Chungu Xia、Wei Sun
DOI:10.1002/cctc.201300102
日期:2013.8
and iron complexes with the tetradentate N ligand (1R,2R)‐N,N'‐dimethyl‐N,N'‐bis(1‐methyl‐2‐benzimidazolylmethyl)cyclohexane‐1,2‐diamine have been synthesized and characterized. The crystal structure of the manganese complex demonstrates a cis‐α configuration. Both the manganese and iron complexes are active catalysts for the asymmetric epoxidation of olefins with H2O2 as an oxidant and acetic acid as
合成了具有四齿N配体(1 R,2 R)-N,N'-二甲基-N,N'-双(1-甲基-2-苯并咪唑基甲基)环己烷-1,2-二胺的锰和铁配合物和特点。锰配合物的晶体结构表现出顺-α构型。锰和铁络合物都是用于烯烃的不对称环氧化的活性催化剂,其中H 2 O 2为氧化剂,乙酸为添加剂。在-20°C时,观察到高达96%ee的α,β-不饱和酮的环氧化。