Production of 2-hydroxynaphthalene-3-carboxylic acid

Details Production of 2-hydroxynaphthalene-3-carboxylic acid Production of 2-hydroxynaphthalene-3-carboxylic acid

1975-12-22

1977-07-26

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5115

Patent

active

040383091

ABSTRACT:
The production of 2-hydroxynaphthalene-3-carboxylic acid by heating sodium .beta.-naphtholate in the presence of an araliphatic compound containing two aromatic radicals and/or in the presence of an aromatic ether having at least one aromatic radical etherified with an aliphatic, cycloaliphatic or araliphatic radical at a temperature of at least 200.degree. C, reaction with carbon dioxide and reaction of the salt formed with acid. The resultant 2-hydroxy-naphthalene-3-carboxylic acid is a starting material for the production of dyes, a coupling component of surface coating colors and chrome dyes and also a developer for diazotizable dyes.

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