Processes for preparing substituted furopyridinones and furopyra

Details Processes for preparing substituted furopyridinones and furopyra Processes for preparing substituted furopyridinones and furopyra

1980-08-21

1982-06-29

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

546116, C07D49104

Patent

active

043373402

ABSTRACT:
Substituted furopyridinones and furopyrazinones which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting diphenylamines with substituted benzoyl (or 3-indolylcarbonyl)pyridinecarboxylic acids and substituted benzoyl (or 3-indolylcarbonyl)pyrazinecarboxylic acids, respectively.

REFERENCES:
patent: 3736168 (1973-05-01), Ozutsumi
patent: 3775424 (1973-11-01), Farber
patent: 4168378 (1979-09-01), Schmidt
Derwent, #45826A for Belgium 862,217, (6-22-78).
Miyazawa, Chem. Abs. 85, 22774 (3-11-76).

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