CH677490

CH677490

The invention is directed to processes for the preparation of dimethyl-1,4-dihydro-2,6-dimethyl-4-(2'-nitrophenyl)-pyridine-3,5-dica rboxylate by reacting 1-methoxy-1-(2'-nitrophenyl)-N-(2'-nitrophenyl)methylene methanamie or 1-(2'-nitrophenyl)-N,N'-bis-(2'-nitrophenyl)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZALAVARI, GYOERGYI (-DOSA), TOEMPE, PETER, BOZSING, DANIEL, DINNYES, ILONA (-NAGY), KISS, ERZSEBET (-BERTOK), TAJTHY, EVA JUDIT (-JUHASZ), KOVANYI, GYOERGYI (-LAX), BECK, IVAN, IMRE, JANOS, MANDI, ATTILA, BENKO, PAL, POCZIK, EVA, LEVAI, LASZLO, SIMONYI, ISTVAN, NAGY, KALMAN, MIKITE, GYULA, GOERGENYI, FRIGYES, FURDYGA, EVA
Format: Patent
Sprache:ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention is directed to processes for the preparation of dimethyl-1,4-dihydro-2,6-dimethyl-4-(2'-nitrophenyl)-pyridine-3,5-dica rboxylate by reacting 1-methoxy-1-(2'-nitrophenyl)-N-(2'-nitrophenyl)methylene methanamie or 1-(2'-nitrophenyl)-N,N'-bis-(2'-nitrophenyl) methylene methanediamine with methyl acetoacetate in the presence of an amine compound or by reacting the monomeric or trimeric from of 2-nitrobenzaldimine with methyl acetoacetate.