Treatment of S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides with enamines derived from ketones gives 4,4-disubstituted-2-phenyl-3,4-dihydro quinazolines. The reaction involves an 1,3-diaza-1,3-diene intermediate which undergo electrocyclic ring closure to give the final products.
Enamines. Part 48. 3,4-Dihydroquinazolines from enamines and S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides / E. Rossi, R. Stradi, P. Visentin. - In: TETRAHEDRON. - ISSN 0040-4020. - 46:10(1990), pp. 3581-3592.
Enamines. Part 48. 3,4-Dihydroquinazolines from enamines and S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides
E. RossiPrimo
;R. StradiSecondo
;
1990
Abstract
Treatment of S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides with enamines derived from ketones gives 4,4-disubstituted-2-phenyl-3,4-dihydro quinazolines. The reaction involves an 1,3-diaza-1,3-diene intermediate which undergo electrocyclic ring closure to give the final products.
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