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IJC-A Vol.50A(11) [November 2011] >

Title: Epoxidation of olefins catalyzed by manganese(II) complexes of Schiff base ligand having N2O coordination sphere
Authors: Guha, Averi
Das, Debasis
Keywords: Epoxidation
Solvent effects
Terminal oxidants
Schiff bases
Issue Date: Nov-2011
Publisher: NISCAIR-CSIR, India
Abstract: Three mononuclear manganese(II) complexes having two N2O coordination spheres have been examined as catalysts for epoxidation of (E)-stilbene and styrene using PhIO and NaOCl as terminal oxidants in four different solvents. The catalytic efficiency of the complexes are observed to be influenced not only by their own structural features but also by the nature of terminal oxidant, substrate as well as the solvents. Epoxidation proceeds with the formation of two different intermediates, O=Mn(IV)(L)(X) and Cl-O-Mn(II)(L)(X) [X=NO3/SCN/N(CN)2], in presence of PhIO and NaOCl respectively. Amongst the solvents, acetonitrile is found to be the most suitable.
Page(s): 1574-1578
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.50A(11) [November 2011]

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