Process for the preparation of 2,6-dihydroxynaphthalene

Details Process for the preparation of 2,6-dihydroxynaphthalene Process for the preparation of 2,6-dihydroxynaphthalene

1988-03-14

1989-08-29

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568735, C07C 3700, C07C 3708

Patent

active

048619205

ABSTRACT:
Process for the preparation of 2,6-dihydroxynaphthalene from 2,6-dialkylnaphthalenes, which are dissolved in an inert solvent and are oxidized at temperatures from 50.degree. to 150.degree. C. by means of oxygen or oxygen donors, in the presence of an alkali metal salt or alkaline earth metal salt of an organic carboxylic acid having 5 to 14 carbon atoms, to give the corresponding 2,6-dialkylnaphthalene dihydroperoxides, and the latter are subsequently hydrolysed.
The process results in pure, easily isolatable products in a good yield. The process products according to the invention are valuable intermediates for, inter alia, dyes, plastics, synthetic fibres, polymeric liquid crystals or pharmaceuticals.

REFERENCES:
patent: 2776322 (1957-01-01), Webster et al.
patent: 2883430 (1959-04-01), Jong
patent: 3141046 (1964-07-01), Bichet et al.
patent: 4262143 (1981-04-01), Becker et al.
patent: 4503262 (1985-03-01), Gupton et al.

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