Process for the preparation of copper quinolinate

Details Process for the preparation of copper quinolinate Process for the preparation of copper quinolinate

1980-08-12

1982-02-16

Berch, Mark L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546321, C07D213807

Patent

active

043160263

ABSTRACT:
A process for the preparation of copper quinolinate in which quinoline is oxidized by hydrogen peroxide in 10 to 30% sulfuric acid in the presence of copper sulfate at a temperature of 55.degree. to 75.degree. C., the molar ratio of sulfuric acid to quinoline being greater than 1:1. The concentration and amount of sulfuric acid enable greater control of the reaction temperature and result in copper quinolate in improved yield and purity.
Copper quinolinate is used to prepare quinolinic acid which is the starting material for some chromogenic materials used in the pressure-sensitive record material field.

REFERENCES:
patent: 2371691 (1945-03-01), Hawkinson
patent: 2487874 (1949-11-01), Huber et al.
patent: 2586555 (1952-02-01), Mueller
patent: 3829432 (1974-08-01), Hanotier et al.
Stix et al., Chem Ber. 65, 11-13 (1932).
Schwarz, Chem Abs. 53, 18970h (1957).
Van de Kamp, Chem Abs. 42, 3783b (1947).
Chemical Abstracts, vol. 88, 22560b (1978).

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