Oxidative coupling with methyl-substituted benzenes
AssigneeThe Dow Chemical Company
InventorStanley S. T. King
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Abstract
The invention, in one aspect, is a process for preparing a (methyl-substituted)diphenyl methane by coupling at least (including benzene) a methyl-substituted benzene into the (methyl-substituted)diphenyl methane comprising contacting at least the methyl-substituted benzene with a solid heterogeneous reactant-catalyst having labile oxygen under conditions whereby the (methyl-substituted)diphenyl methane is prepared. For example, using molybdenum trioxide or vanadium pentoxide, toluene can be coupled in the vapor or liquid phase to prepare (2-methylphenyl)phenylmethane. By-product formation, especially formation of carbon dioxide, can be very low.
Claims11
A process for preparing a (methyl-substituted)diphenyl methane by coupling at least a methyl-substituted benzene into the (methyl-substituted)diphenyl methane comprising contacting at least the methyl-substituted benzene with a solid heterogeneous reactant-catalyst having labile oxygen under conditions whereby the (methyl-substituted)diphenyl methane is prepared, said solid heterogeneous reactant-catalyst having labile oxygen being selected from the group consisting of a vanadium oxide, a molybdenum oxide, and a bismuthmolybdate-containing catalyst.
A process for preparing a (methyl-substituted)diphenyl methane by coupling at least a methyl-substituted benzene into the (methyl-substituted)diphenyl methane comprising contacting at least the methyl-substituted benzene with molybdenum trioxide or vanadium pentoxide under conditions whereby the (methyl-substituted)diphenyl methane is prepared.
Dependencies are inferred from the claim text.