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Chiral Co(iii)–salen complex supported over highly ordered functionalized mesoporous silica for enantioselective aminolysis of racemic epoxides†
Md. Mominul Islam,Piyali Bhanja,Mita Halder,Sudipta K. Kundu,Asim Bhaumik,Sk. Manirul Islam
RSC Advances Pub Date : 11/08/2016 00:00:00 , DOI:10.1039/C6RA21523H
Abstract

Here we demonstrate the synthesis of a novel chiral Co(III)–salen complex supported functionalized 2D-hexagonal mesoporous silica material Co(III)@AFS-1. This material has shown excellent catalytic activity for the regio- and enantioselective asymmetric ring opening (ARO) of terminal and meso epoxides using various aromatic as well as cyclic amines to produce chiral β-amino alcohols having very good enantioselectivities (ee > 99%) at ambient temperature under solvent-free neat conditions.

Graphical abstract: Chiral Co(iii)–salen complex supported over highly ordered functionalized mesoporous silica for enantioselective aminolysis of racemic epoxides
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