Oxidative coupling of methyl-substituted benzenes

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire cyclic molecules or entire...

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585426, C07C 272

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active

048145378

ABSTRACT:
A (methyl-substituted)diphenyl methane such as methyldiphenylmethane is prepared by a coupling reaction wherein a methyl-substituted benzene such as toluene is contacted with a solid heterogeneous catalyst having labile oxygen such as an oxide of vanadium, rhenium or molybdenum. By-product formation, especially the formation of carbon dioxide, is significantly reduced by the practice of this process.

REFERENCES:
patent: 2904580 (1959-09-01), Idol, Jr.
patent: 4151213 (1979-04-01), Fields
patent: 4390728 (1983-06-01), Daniel
Chem. Abs., 97(15):126,725m, abstracting Madhock et al., Indian J. Technol., 20(5), 184-89, (1982).
Andersson, J. Catal., 98, 138, (1986).

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