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F Hoffmann La Roche AG
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F Hoffmann La Roche AG
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Publication of ES238819A1publicationCriticalpatent/ES238819A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
Process for the preparation of heterocyclic compounds consisting of cyclizing with an alkaline condensation agent a 1,1-disubstituted 1-cyano-2-oxo-4-amino-3-butene in which the substituents in the 1-position are alkyl radicals or alkenyl having a total of 2 to 10 carbon atoms, thus producing a 3,3-disubstituted 2-amino-4-oxo-3,4-dihydropyridine. (Machine-translation by Google Translate, not legally binding)
ES0238819A1956-11-281957-11-27Procedure for the elaboration of heterocyclic compounds (Machine-translation by Google Translate, not legally binding)
ExpiredES238819A1
(en)
Procedure for obtaining new derivatives of piperidil-2 phenylmethanols and their added salts (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)