Process for the purification of substituted 4-amino-1,2,4-triazi

Details Process for the purification of substituted 4-amino-1,2,4-triazi Process for the purification of substituted 4-amino-1,2,4-triazi

1993-12-07

1995-08-08

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D253075

Patent

active

054400384

ABSTRACT:
Substituted 4-amino-1,2,4-triazine-5-ones are purified to remove unwanted N-isomers by maintaining the crude product at a temperature of from about 55.degree. C. to about 70.degree. C. in the presence of a hydroxide, preferably an alkali metal hydroxide for at least 0.5 hour.

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patent: 4123253 (1978-10-01), Hack et al.
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patent: 4309538 (1982-01-01), Schmidt et al.
patent: 4328340 (1982-05-01), Bonse et al.

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