Process for preparing dimethylnaphthalene

Details Process for preparing dimethylnaphthalene Process for preparing dimethylnaphthalene

1990-03-15

1991-08-27

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585411, 585449, 585467, 585481, 585482, C07C 200, C07C 264, C07C 522

Patent

active

050435019

ABSTRACT:
A process for producing 2,6-dimethylnaphthalene by alkylation of an alkylaromatic, e.g. toluene, with a C.sub.5 olefin alkylating agent, e.g. 1-pentene, in the presence of a suitable alkylation catalyst, and dehydrocyclization of the resulting alkylate with a dehydrocyclization catalyst to generate a dimethylnaphthalene product rich in the 2,6-isomer. Additional process steps can include isomerization of the product and further alkylation.

REFERENCES:
patent: 3775496 (1973-11-01), Thompson
patent: 3931348 (1976-01-01), Taniguchi et al.
patent: 4439409 (1984-03-01), Puppe et al.
patent: 4777312 (1988-10-01), Bakas et al.
patent: 4795847 (1989-01-01), Weitkamp et al.
patent: 4826667 (1989-05-01), Zones et al.
patent: 4891458 (1990-01-01), Innes et al.

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