Process for producing croconic acid or salt thereof

Details Process for producing croconic acid or salt thereof Process for producing croconic acid or salt thereof

2006-03-31

2010-02-02

Shiao, Rei-tsang (Department: 1626)

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

Organic compounds

Nitriles

Reexamination Certificate

active

07655814

ABSTRACT:
Croconic acid or a salt thereof is easily produced at low cost by a reaction of a hydrocarbon compound consisting of a five-membered ring or a hydrocarbon compound consisting of a five-membered ring having an oxo group and/or a monovalent group linked via an oxygen atom with a halogenating agent.

REFERENCES:
patent: 2815314 (1957-12-01), Hale et al.
Fornals et al. CAS: 109:231221, 1987.
O. Gelormini, et al., “The Oxidation of Inosite with Nitric Acid”, Journal of the American Chemical Society (1930), vol. 52, pp. 2483-2494.
Jack D. Knight et al.; J. Am. Chem. Soc., vol. 73, pp. 4136-4138, 1951.
Singh Bharat et al.; Tetrahedron, vol. 41, No. 14, pp. 2871-2874, 1985.
Shoji Kajigaeshi et al.; Bull. Chem. Soc. of Japan; vol. 62, No. 8, pp. 2585-2588, 1989.

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