Bioinspired Manganese and Iron Complexes with Tetradentate N Ligands for the Asymmetric Epoxidation of Olefins
Bioinspired Manganese and Iron Complexes with Tetradentate N Ligands for the Asymmetric Epoxidation of Olefins
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DOI：
10.1002/cctc.201300102
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发表时间：
2013-08
期刊：
影响因子：
4.5
通讯作者：
Xiaoe Wang;Chengxia Miao;Shoufeng Wang;C. Xia;Wei Sun
中科院分区：
文献类型：
--
作者：
Xiaoe Wang;Chengxia Miao;Shoufeng Wang;C. Xia;Wei Sun
合成并表征了N-四齿配体(1R，2R)-N，N‘-二甲基-N，N’‐bis(1‐methyl‐2‐benzimidazolylmethyl)cyclohexane‐1，2‐diamine与锰、铁的配合物。锰配合物的晶体结构为顺式-α构型。锰和铁的络合物都是以H_2O_2为氧化剂，以醋酸为添加剂的不对称环氧化反应的活性催化剂。在20°C下，α，β-不饱和酮的环氧化反应可观察到高达96%的ee。
The manganese 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 an additive. Up to 96 % ee was observed for the epoxidation of α,β‐unsaturated ketones at −20 °C.