Process for producing 2-hydroxynaphthalene-3,6-dicarboxylic acid

Details Process for producing 2-hydroxynaphthalene-3,6-dicarboxylic acid Process for producing 2-hydroxynaphthalene-3,6-dicarboxylic acid

1998-06-16

2000-10-17

Geist, Gary

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

Organic compounds

Carboxylic acids and salts thereof

562425, C07C 5115

Patent

active

061334758

ABSTRACT:
The present invention relates to a process for preparing 2-hydroxynaphthalene-3,6-dicarboxylic acid which comprises reacting potassium 2-naphtholate and carbon dioxide at a temperature 290.degree. C. or higher under a pressure 30 kg/cm.sup.2 (G) or higher. According to this process, 2-hydroxynaphthalene-3,6-dicarboxylic acid can be obtained in high yield.

REFERENCES:
patent: 1593816 (1926-07-01), Andre
patent: 3405169 (1968-10-01), Levy et al.
patent: 4287357 (1981-09-01), Mueller et al.
patent: 4329494 (1982-05-01), Montgomery
patent: 5075496 (1991-12-01), Pugach et al.
patent: 5312976 (1994-05-01), Hautzel et al.
patent: 5532406 (1996-07-01), Rittner

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