Method for producing diarylmethanes

Details Method for producing diarylmethanes Method for producing diarylmethanes

C - Chemistry, Metallurgy

07

C

260/681.6

C07C 2/86 (2006.01) C07C 15/16 (2006.01)

Patent

CA 2030013

The present invention relates to a method for producing diarylmethanes represented by the following formula (III) Image (III) wherein R1 to R3 each stand for a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. This method comprises the reaction of a benzyl chloride represented by the following general formula (I) with benzene or an alkylbenzene represented by the following general formula (II): Image Image (I) (II) wherein R1 to R3 have the same meanings as defined above. and is characterized in that the catalyst used is an HY or HL type zeolite having a SiO2/Al2O3 molar ratio of 4 - 10 and an alkali metal content of 5% by weight or less, calculated as an alkali metal oxide, or a zeolite obtained by the exchange of said HY or HL type zeolite with cations of a di- or tri-valent metal.

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