4-NITRO-1,2-DIHYDROCARBYL-PYRAZOLIDINES, PROCEDES POUR LEUR PREPARATION ET UTILISATION POUR LA PREPARATION DES ANALOGES 4-AMINO

4-NITRO-1,2-DIHYDROCARBYL-PYRAZOLIDINES, PROCEDES POUR LEUR PREPARATION ET UTILISATION POUR LA PREPARATION DES ANALOGES 4-AMINO

4-Nitro-1,2-hydrocarbyl pyrazolidines are prepared by a novel route from 1,2-disubstituted hydrazines and 1,3-di-(secondary amino)-2-nitropropanes and reduced to the corresponding 4-amino-1,2-hydrocarbyl pyrazolidines, which latter compounds are intermediates in the preparation of certain pharmaceut...

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Bibliographische Detailangaben
Hauptverfasser: LO, YOUNG SEK, MUNSON, HARRY RANDALL, JUN
Format: Patent
Sprache:fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:4-Nitro-1,2-hydrocarbyl pyrazolidines are prepared by a novel route from 1,2-disubstituted hydrazines and 1,3-di-(secondary amino)-2-nitropropanes and reduced to the corresponding 4-amino-1,2-hydrocarbyl pyrazolidines, which latter compounds are intermediates in the preparation of certain pharmaceutical benzamides. The novel 4-nitro-1,2-hydrocarbyl pyrazolidines have the formula: wherein R1 and R2 are selected from loweralkyl, lowercycloalkyl or phenyl-loweralkyl and may be the same or different.