Asymmetric epoxidation of unfunctionalized olefins with C2-symmetrical diphenol-derived axially coordinated homogeneous chiral bi-Mn(III) salen complexes
作者:Tianyi Dong、Xiaoju Wu、Jiali Cai、Jing Huang
DOI:10.1016/j.inoche.2019.01.010
日期:2019.3
coordinated homogeneous chiral bi-Mn(III) salen complexes are synthesized and their catalytic effects in asymmetric epoxidation of unfunctionalized olefins are investigated in details. The results show that excellent enantioselectivities and high activities are achieved (enantioselectivities up to >99% in 99.9%) in the absence of expensive NMO. Compared with Jacobsen'scatalyst, the configuration of C2-symmetrical