Production of 2-hydroxynaphthalene-3-carboxylic acid

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

1975-09-24

1977-06-28

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5115

Patent

active

040325687

ABSTRACT:
2-HYDROXYNAPHTHALENE-3-CARBOXYLIC ACID IS PRODUCED BY HEATING A MIXTURE OF POTASSIUM .beta.-NAPHTHOLATE AND SODIUM .beta.-NAPHTHOLATE TO A TEMPERATURE OF AT LEAST 180.degree. C, reacting it with carbon dioxide and treating the salt formed with an acid. The product is a dye intermediate, a coupling component of surface coating dyes and chrome dyes, and a developer for diazo dyes.

REFERENCES:
patent: 1725394 (1929-08-01), Dreteile
patent: 2132356 (1938-10-01), Lecher et al.
patent: 2807643 (1957-09-01), Hartley
patent: 2824892 (1958-02-01), Barkley
patent: 3405169 (1968-10-01), Levy et al.
patent: 3655744 (1972-04-01), Yasuhara et al.

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