Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1995-02-01
1997-02-04
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C07C 5115
Patent
active
055999719
ABSTRACT:
A method for producing 1,4-dihydroxy-2-naphthoic acid which comprises the steps of: subjecting 1,4-dihydroxynaphthalene into an alkali metal salt formation reaction in an organic medium capable of dissolving 1,4-dihydroxynaphthalene using an alkali metal alcoholate; and subjecting the salt formation reaction mixture to carboxylation using carbon dioxide gas.
REFERENCES:
patent: 1697332 (1929-01-01), Stenzl
patent: 2807643 (1957-09-01), Hartley
patent: 3825593 (1974-07-01), Meek
Lindsey, Chem. Rev., 57, pp. 583-620 (1957).
Homeyer et al, "A Study of Diethyl 1,4-Dihydroxy-2,3-Naphthalate," J. Am. Chem. Soc., vol. 64, p. 798, Apr. 1942.
J. Prakt. Chem., vol. 62, No. 2, p. 30, May 1900.
Kometani Norio
Nakamatsu Toshio
Nishida Yasuhiro
Watanabe Shin-ichi
Shippen Michael L.
Sumika Fine Chemicals Co., Ltd.
Sumitomo Chemical Company Limited
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