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Sandoz AG
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Sandoz AG
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Application filed by Sandoz AGfiledCriticalSandoz AG
Priority to ES0242361ApriorityCriticalpatent/ES242361A1/en
Publication of ES242361A1publicationCriticalpatent/ES242361A1/en
Process for obtaining new acetydinic derivatives of the general formula I ** (See formula) ** where R1 and R2 mean low or equal groups of alkyl, aryl or aralkyl, R3 is by a hydrogen atom or by an acyl group and R4 by an alkyl group or a piperidyl-4 residue or R3 and R4 can mean hydrogen or same or different groups of aryl or aralkyl or else R3 and R4 can form, together with the nitrogen atom, which is outside the acetydinic ring, a saturated or unsaturated 5- or 6-membered heterocyclic system, which may be substituted by aromatic residues or it may still contain a second hetero atom, characterized, in that the hydrazine derivatives of the general formula II ** (See formula) ** where R'3 and R'4 together form an alkylidene group or have the same meaning as R3 and R4 in the formula I, with the limitation that both can not mean hydrogen, they are reacted with reactive malonic acid derivatives, which are substituted by R1 and R2 and, if appropriate, the acyl or alkylidene group is dissociated. (Machine-translation by Google Translate, not legally binding)
ES0242361A1958-06-111958-06-11Procedure for the obtaining of new acetydic derivatives (Machine-translation by Google Translate, not legally binding)
ExpiredES242361A1
(en)
Procedimine for the obtaining of derivatives of the acid p- [cumarinyl- (3)] - phenyl carbamine (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)
Procedure for obtaining new derivatives of piperidil-2 phenylmethanols and their added salts (Machine-translation by Google Translate, not legally binding)