FREMGANGSMAADE TIL FREMSTILLING AF PYRIDINDERIVATER

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)...

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Main Authors TOEMPE, PETER, BOZSING, DANIEL, ZALAVARI NEE DOSA, GYOERGYI, DINNYES NEE NAGY, ILONA, KOVANYI NEE LAX, GYOERGYI, BECK, IVAN, IMRE, JANOS, KISS NEE BERTOK, ERZSEBET, MANDI, ATTILA, BENKO, PAL, POCZIK, EVA, LEVAI, LASZLO, SIMONYI, ISTVAN, NAGY, KALMAN, TAJTHY NEE JUHASZ, EVA JUDIT, MIKITE, GYULA, GOERGENYI, FRIGYES, FURDYGA, EVA
Format Patent
LanguageDanish
Published 09.09.1989
Edition4
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary: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.
Bibliography:Application Number: DK19890001131