ES240274A2 - Procedure for the obtaining of new derivatives of pirazolon (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the obtaining of new derivatives of pirazolon (Machine-translation by Google Translate, not legally binding)
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Sandoz AG
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Sandoz AG
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Priority to ES0240274ApriorityCriticalpatent/ES240274A2/en
Publication of ES240274A2publicationCriticalpatent/ES240274A2/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Improvements in the procedure for obtaining new pirazolºn derivatives, object of the main patent, of the formula ** (See formula) ** wherein R stands for chlorine or methyl, characterized in that N-methyl-piperidyl-4-hydrazine is reacted with esters of ketocarbon acid of the formula ** (See formula) ** where R has the meaning indicated above. (Machine-translation by Google Translate, not legally binding)
ES0240274A1958-02-211958-02-21Procedure for the obtaining of new derivatives of pirazolon (Machine-translation by Google Translate, not legally binding)
ExpiredES240274A2
(en)
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