ES229352A1 - A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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JR Geigy AG
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Priority to ES0229352ApriorityCriticalpatent/ES229352A1/en
Publication of ES229352A1publicationCriticalpatent/ES229352A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
Procedure for the preparation of 1 2-diaryl-3 5. 5-dioxopyrazolidines substituted in position 4 characterized in that a functional derivative apt to react from a carboxylic acid of general formula R-COOH is reacted in which R-CO- means the radical of an heterocyclic carboxylic acid optionally substituted optionally in the presence of a condensation medium with a malonylhydrazobenzene of general formula ** (See formula) ** in which Ar1 and Ar2 <mean/sub> phenyl radicals that may be substituted in the same or different way. (Machine-translation by Google Translate, not legally binding)
ES0229352A1956-06-091956-06-09A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
ExpiredES229352A1
(en)
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 1,2-diaril-3,5-dioxo-pirazolidines, replaced in position 4 (Machine-translation by Google Translate, not legally binding)
Procedure for obtaining a derivative of 1,1-dioxide from 3,4-hydride-1,2,4-benzotiadiacin (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of substitute 1,2-diarile-3,5-dioxo-pirazolidines in position 4 (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of new 1,2) diaril-3,5-dioxopirazolidinas replaced in position 4 (Machine-translation by Google Translate, not legally binding)
Procedimine for the obtaining of derivatives of the acid p- [cumarinyl- (3)] - phenyl carbamine (Machine-translation by Google Translate, not legally binding)