ES241019A2 - Procedure for the obtaining of new derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the obtaining of new derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Sandoz AG
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Sandoz AG
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Priority to ES0241019ApriorityCriticalpatent/ES241019A2/en
Publication of ES241019A2publicationCriticalpatent/ES241019A2/en
Improvements in the procedure for obtaining new 3,5-diketopirazolidine derivatives, object of main patent no. 237,614, characterized in that in the new 3,5-diketopirazolidine derivatives of the general formula I **(See formula)** where R1 is isopropyl, isobutyl or benzyl, ω-(N-methyl-piperidyl-4) - ω'- isopropyl-hydrazine of the formula II is reacted **(See formula)** with substituted dialkyl esters of malonic acid of the general formula III **(See formula)** where Alk means a low alkyl group. (Machine-translation by Google Translate, not legally binding)
ES0241019A1958-03-271958-03-27Procedure for the obtaining of new derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding)
ExpiredES241019A2
(en)
Procedure for the obtaining of new arilalkilcarboxylic acids, its basic esters, acid salts and quaternary salts (Machine-translation by Google Translate, not legally binding)