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Sandoz AG
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Sandoz AG
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Application filed by Sandoz AGfiledCriticalSandoz AG
Publication of ES232837A1publicationCriticalpatent/ES232837A1/en
Procedure for obtaining new derivatives of hydrazine, especially (N-alkyl-piperidyl-4) -hydrazines, characterized in that: a) a hydrazine derivative of formula I ** (See formula) ** where R1 represents hydrogen or an alkyl or acyl residue and X hydrogen or an acyl residue but where R1 and X cannot both be hydrogen or both acyl residues are condensed with an N-alkyl-r-piperidone of formula II * * (See formula) ** where R2 means an alkyl group and the hydrazone thus obtained which in the case of representing R1 an alkyl group and X hydrogen can be acylated in case given in a known way, a possibly existing acyl group is dissociated from the reaction product, if necessary; or b) hydrazine or a hydrazine derivative of formula I is reacted with a 4-halogen-N-alkyl-piperidine of formula II ** (See formula) ** where R2 has the meaning indicated above and Hal represents a halogen and from the reaction product dissociates, if appropriate, from an existing acyl group; or c) chloroamine is reacted with a 4-amino-N-alkyl-piperidine of formula IV ** (See formula) ** where R2 has the meaning indicated above and the reaction product is acylates or rents if necessary. (Machine-translation by Google Translate, not legally binding)
ES0232837A1956-01-071957-01-05Procedure for the obtaining of new hydration derivatives (Machine-translation by Google Translate, not legally binding)
ExpiredES232837A1
(en)
Procedimine for the obtaining of derivatives of the acid p- [cumarinyl- (3)] - phenyl carbamine (Machine-translation by Google Translate, not legally binding)
Procedure for obtaining new derivatives of piperidil-2 phenylmethanols and their added salts (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of acil-anylides with basic substitutors and their derivatives (Machine-translation by Google Translate, not legally binding)