Process for production of 2,6-dimethylnaphthalene

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

1989-07-05

1991-04-16

Sneed, H. M. S.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585321, 585322, 585409, 585469, 585410, 585411, 549242, 568311, 568814, C07C 100, C07C 11253, C07C 120

Patent

active

050084798

ABSTRACT:
A process for production of 2,6-dimethylnaphthalene is disclosed, comprising the steps: (1) an acylation step where p-tolyl sec-butyl ketone is produced from toluene, n-butene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the p-tolyl sec-butyl ketone is hydrogenated: and (3) a dehydrogenation and cyclization step where the hydrogenated product obtained above is subjected to dehydrogenation and cyclization to produce the desired 2,6-dimethylnaphthalene. The process enables efficiently producing a high quality or high purity 2,6-dimethylnaphthalene.

REFERENCES:
patent: 2575403 (1951-11-01), Young et al.
patent: 2848509 (1958-08-01), Toland et al.
patent: 3391348 (1976-01-01), Taniguichi et al.
patent: 3806548 (1974-04-01), Harpold et al.
patent: 3944627 (1976-03-01), Schram et al.
patent: 4487972 (1984-11-01), Haag et al.

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