Production of 2-hydroxynaphthalene-3-carboxylic acid

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

1975-09-25

1977-04-26

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260525, C07C 5115, C07C 5148

Patent

active

040201023

ABSTRACT:
2-Hydroxynaphthalene-3-carboxylic acid is prepared by the reaction of sodium-.beta.-naphtholate with carbon dioxide, extraction of the reaction mixture in the presence of water with benzene or a benzene derivative in a specific ratio and separation of the end product from the extracted mixture. The product is a starting material for the production of dyes and a coupling component in the manufacture of azo dyes.

REFERENCES:
patent: 2824892 (1958-02-01), Barkley
patent: 3405169 (1968-10-01), Leug et al.
patent: 3405170 (1968-10-01), Leug et al.
patent: 3655744 (1972-04-01), Yasuhara et al.

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