α-Pyrones. III. Synthesis of 5,6-dihydro-1H-benzo[c]quinolizin-1-ones from 6-(2-nitrostyryl)-2H-pyran-2-ones
Articolo
Data di Pubblicazione:
1993
Citazione:
α-Pyrones. III. Synthesis of 5,6-dihydro-1H-benzo[c]quinolizin-1-ones from 6-(2-nitrostyryl)-2H-pyran-2-ones / M.L. Gelmi, D. Pocar. - In: JOURNAL OF HETEROCYCLIC CHEMISTRY. - ISSN 0022-152X. - 30:2(1993), pp. 483-485.
Abstract:
The 6-(2-nitrostyryl)-2H-pyran-2-ones 1 were reduced with hydrogen over Pd/C at room temperature and atmospheric pressure giving the 2-benzoylamino-4-(1,2,3,4-tetrahydro-2-quinolinylidene-2-pentenedioic acid derivatives 2 which were converted, without isolation, into the 5,6-dihydro-1H-benzo[c]quinolizin-1-ones 4 in refluxing acetic anhydride. When α-aminoacids 2 were treated with acetic anhydride at room temperature oxazolones 3 were isolated, while by heating quinolizines 4 were found. Compounds 3 were transformed into 4 in refluxing acetic acid or anhydride. Copyright
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
M.L. Gelmi, D. Pocar
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