Resumen
The one-pot synthesis of the hitherto unknown N-substituted 4,5-dimethylene-1,3-oxazolidin-2-ones from diacetyl and the corresponding isocyanate in the presence of triethylamine is described. Diene (4a) undergoes Diels-Alder cycloaddition with N-phenylmaleimide (10), and, in the absence of a dienophile, gives a mixture of dimers (12) and (13), and the ring closure cyclobutene (14).
Idioma original | Inglés |
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Páginas (desde-hasta) | 1951-1956 |
Número de páginas | 6 |
Publicación | Heterocycles |
Volumen | 36 |
N.º | 9 |
DOI | |
Estado | Publicada - 1 sep. 1993 |