Process for production of 2,6-dimethylnaphthalene

Details Process for production of 2,6-dimethylnaphthalene Process for production of 2,6-dimethylnaphthalene

1989-09-12

1991-06-11

Sneed, H. M. S.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585409, 585410, 585411, 549242, 568311, 568814, C07C 500, C07C 11253, C07C 1264, C07C 1200

Patent

active

050233904

ABSTRACT:
A process for production of 2,6-dimethylnaphthalene is disclosed; comprising the steps: (1) an acylation step where 2,4-dimethylisobutyrophenone is produced from m-xylene, propylene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the above 2,4-dimethylisobutyrophenone is hydrogenated: and (3) a dehydrogenation and cyclization step where the above hydrogenated product is subjected to dehydrogenation and cyclization to produce the desired 2,6-dimethylnaphthalene. The process enables efficiently producing high quality or high purity 2,6-dimethylnaphthalene.

REFERENCES:
patent: 2404914 (1946-07-01), Mattox
patent: 2575403 (1951-11-01), Young et al.
patent: 2802812 (1957-08-01), Overberger
patent: 3931348 (1976-01-01), Taniguchi et al.

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