Preparation of p-cymene and homologous alkylbenzenes

Details Preparation of p-cymene and homologous alkylbenzenes Preparation of p-cymene and homologous alkylbenzenes

1987-02-20

1988-01-19

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

From alicyclic

585432, C07C 532

Patent

active

047206039

ABSTRACT:
Alkylbenzenes of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.4 -alkyl, preferably methyl, and R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, preferably methyl, are prepared by catalytic aromatization of the corresponding alkenylcyclohexenes of the general formula II ##STR2## by carrying out the conversion in the gas phase at 150.degree.-400.degree. C. over a catalyst which contains palladium oxide and sulfur and/or selenium or selenium oxide on active carbon.

REFERENCES:
patent: 2272711 (1942-02-01), Hull
patent: 2400012 (1946-05-01), Littmann
patent: 2402898 (1946-06-01), Kirkpatrick
patent: 2857439 (1958-10-01), Glasebrook
patent: 3312635 (1967-04-01), Liquori
patent: 4239928 (1980-12-01), Takahashi et al.
Bulletin of the Chemical Society of Japan, vol. 51 (12), 3641-3642 (1978).

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