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Preparation of MCM-41 Supported Heterogenized Chiral Salen Mn (III) Complex and the Catalytic Activity in the Asymmetric Epoxidation

Preparation of MCM-41 Supported Heterogenized Chiral Salen Mn (III) Complex and the Catalytic Activity in the Asymmetric Epoxidation

Authors :
Shanshan Zhao
Jiquan Zhao
Dongmin Zhao
Weiyu Wang
Source :
Journal of Inorganic and Organometallic Polymers and Materials. 17:653-659
Publication Year :
2007
Publisher :
Springer Science and Business Media LLC, 2007.

Abstract

A chiral Manganese (III) salen complex was immobilized on the walls of MCM-41 (mobile crystalline material) through the multi-grafting method. The immobilized complex was characterized by XRD, FTIR, UV-Vis, ICP and Nitrogen sorption, and was applied to the asymmetric epoxidation of unfuctionalized alkenes including 1,2-dihydronaphthalene, α-methylstyrene, cis-β-methylstyrene, styrene using NaClO and m-chloroperbenzoic acid (m-CPBA) as oxidants respectively. The immobilized complex showed good activity and enantioselectivity in the epoxidation of 1,2-dihydronaphthalene by using NaClO as oxidant. It could also be run for 4 times in the epoxidation of α-methylstyrene without obvious loss of activity or enantiomeric excess.

Details

ISSN :
15741451 and 15741443
Volume :
17
Database :
OpenAIRE
Journal :
Journal of Inorganic and Organometallic Polymers and Materials
Accession number :
edsair.doi...........a5c4bcfe7d4299b4164da52624a1bccb
Full Text :
https://doi.org/10.1007/s10904-007-9157-9