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Sandoz AG
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Sandoz AG
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Publication of ES238797A1publicationCriticalpatent/ES238797A1/en
Process for obtaining new acyl hydrazones, especially (N-alkyl-4-piperidone) -acetyl hydrazones of the general formula I ** (See formula) ** where R1 signifies alkyl and hydrogen or a lower alkyl group and R3 is instead of a single or several times substituted aromatic moiety, or instead of a heterocyclic moiety, which may also be substituted, being characterized in that N-alkyl-4-piperidones of the general formula II ** (See formula) ** where R1 has the meaning indicated above, either they are condensed with a hydrazide of an aromatic or heterocyclic carbonic acid of the formula III ** (See formula) ** where R2 and R3 have the meaning mentioned above or are condensed with a hydrazinic derivative of the general formula IV H2N-NH-R2, IV where R means a lower alkyl group and the hydrazones thus obtained of the general formula V ** (See formula) ** where R1 and R2 have the meaning indicated above, they are reacted with reactable derivatives of aromatic or heterocyclic carbonic acids of the general formula X-CO-R3 WE where R3 has the meaning indicated above and X is by halogen or O-alkyl. (Machine-translation by Google Translate, not legally binding)
ES0238797A1956-12-131957-11-26Procedure for the obtaining of new stabilization (Machine-translation by Google Translate, not legally binding)
ExpiredES238797A1
(en)
Procedure for the obtaining of new derivatives of heterocyclic hydrazines and their salts (Machine-translation by Google Translate, not legally binding)
Improvements introduced in patent number 232318, procedure for the obtaining of new amidas of alpha - amino - beta - oxicarboxylic acids (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of new esters 1-alkyl-4-piperidilic O-substitute benzoic acids (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)