Process for the preparation of pyridobenzodiazepinone

Details Process for the preparation of pyridobenzodiazepinone Process for the preparation of pyridobenzodiazepinone

1988-10-26

1989-06-20

Sutto, Anton H.

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

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

514220, C07D47104

Patent

active

048410462

ABSTRACT:
The present invention refers to an improved method for the preparation of 6,11-dihydro-5H-pyrido[2,3-b][1,5]benzodiazepin-5-one in which the condensation between 2-chloronicotinic acid and o-phenylenediamine is carried out by refluxing in the presence of a solvent consisting of a cycloalkanol. The end product is in pure state and it may be utilized as such.

REFERENCES:
patent: 3316251 (1967-04-01), Schmidt

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