Synthesis of Hybrid Supports ZPS-IPPA and Application for Heterogeneous Olefin Epoxidation

doi:10.7503/cjcu20130012

Abstract

Abstract:

In this work, a different kind of linker group modified ZPS-IPPA-supported chiral Mn^Ⅲ(salen) were prepared and evaluated in the asymmetric epoxidation of unfunctionalized olefins with m-CPBA as an oxidant. The results demonstrated that the conversions and e.e. values increased in the presence of axial additive via diamine linkers for the immobilized Mn^Ⅲ(salen) but sharply improved in the absence of axial additive via alkoxyl linkers or diphenoxyl. In addition, the heterogeneous catalyst could be reused at least five times without significant loss of activity and enantioselectivity. Furthermore, the conversion and enantioselectivity could maintain the same level when the template reaction was simultaneously magnified, which has a preliminary prospect in the application for industrial.

Key words: Zirconium poly(styrene-isopropenyl phosphonate)-phosphate, Chiral Mn^Ⅲ(salen) catalyst, Asymmetric epoxidation, Axial co-catalyst

CLC Number:

TrendMD:

ZOU Xiao-Chuan, SHI Kai-Yun, CHEN Shao-Cheng, FU Xiang-Kai. Synthesis of Hybrid Supports ZPS-IPPA and Application for Heterogeneous Olefin Epoxidation[J]. Chem. J. Chinese Universities, 2013, 34(10): 2319.

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