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Aerobic oxidative cleavage of cinnamaldehyde to benzaldehyde catalyzed by metalloporphyrins under mild conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
51441 46843 2009 5 PDF Available
Title
Aerobic oxidative cleavage of cinnamaldehyde to benzaldehyde catalyzed by metalloporphyrins under mild conditions
Abstract

Efficient oxidative cleavage of cinnamaldehyde to benzaldehyde catalyzed by metalloporphyrins in the presence of dioxygen has been developed. Manganese(III) meso-tetraphenylporphyrin chloride (MnTPPCl) showed excellent activity for the oxidation under mild conditions. Different influencing factors have been investigated, and 71% yield of benzaldehyde was obtained under the optimum conditions (60 °C, 3 h, toluene as solvent, molar ratio for cinnamaldehyde:MnTPPCl:isobutylaldehyde = 1:0.001:5). Moreover, a plausible mechanism including free radical process and high-valent intermediate (MnIVO) was proposed.

Keywords
Aerobic oxidation; Metalloporphyrins; Molecular oxygen
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Aerobic oxidative cleavage of cinnamaldehyde to benzaldehyde catalyzed by metalloporphyrins under mild conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 6, 15 February 2009, Pages 828–832
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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