Enhanced activity of enantioselective (salen)Mn(III) epoxidation catalysts through supramolecular complexation
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منابع مشابه
Enhanced activity of enantioselective (salen)Mn(III) epoxidation catalysts through supramolecular complexation
(Salen)Mn(III) catalysts show increased turnover numbers in the catalytic asymmetric epoxidation of conjugated olefins upon addition of bulky Lewis acids (LA) such as zinc tetraphenylporphyrin (ZnTPP). Up to 3-fold increase in total catalytic activity and at least a 20-fold increase in catalyst stability was observed with a (salen)Mn catalyst bearing pendant 5,5′-bis-pyridyl groups. This latter...
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Ž . Several manganese III porphyrins showed significantly increased turnover-numbers for the catalytic epoxidation of Ž . styrene upon addition of bulky Lewis acids such as ZnTPP and MgTPP TPPs tetraphenylporphyrin . Catalytic enhancement of twoto four-fold, depending on the additive, was observed with a manganese porphyrin bearing bis-pyridyl groups. The enhancement is primarily attributed to ...
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ژورنال
عنوان ژورنال: Journal of Molecular Catalysis A: Chemical
سال: 2001
ISSN: 1381-1169
DOI: 10.1016/s1381-1169(01)00165-0