Silica gel anchored chiral Mn(III)salen complexes for enantioselective epoxidation of unfunctionalised olefins

Choudary, B. M. ; Sreenivasa Chowdari, N. ; Lakshmi Kantam, M. ; Lakshmi Santhi, P. (2001) Silica gel anchored chiral Mn(III)salen complexes for enantioselective epoxidation of unfunctionalised olefins Catalysis Letters, 76 (3-4). pp. 213-218. ISSN 1011-372X

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Official URL: http://www.springerlink.com/content/h8mm16k3557317...

Related URL: http://dx.doi.org/10.1023/A:1012317827817

Abstract

Heterogeneous Mn(III) chiral salen complexes are prepared through covalent attachment of salen ligand on silica gel via chloropropyl spacer and subsequent complexation with manganese. The complexes are well characterized by IR, UV/VIS, TGA and elemental analysis. Epoxidation of unfunctionalised prochiral olefins by Mn(III) chiral salen complexes using iodosobenzene and m-CPBA as the terminal oxidants and NMO as a co-oxidant was achieved with good yields albeit low enantiomeric excess.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
Keywords:Asymmetric Epoxidation; Mn(III)salen Complex; Olefins; Heterogeneous Catalysis
ID Code:30511
Deposited On:23 Dec 2010 13:26
Last Modified:28 May 2011 09:13

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