The Behavior of Dimethylamino-Substituted 2,5-Diaryloxazoles and 2,5-Diaryl-1,3,4-oxadiazoles under Vilsmeier—Haack Conditions

Autor: I. G. Ermolenko, B. M. Krasovitskii, I. A. Fedyunyaeva, Alexander V. Mazepa, O. N. Lyubenko, O. S. Galkina, N. A. Popova, Leonid D. Patsenker
Rok vydání: 2004
Předmět:
Zdroj: ChemInform. 35
ISSN: 1522-2667
0931-7597
Popis: It has been shown that dimethylamino-substituted 2,5-diaryloxazoles and 2,5-diaryl-1,3,4-oxadiazoles undergo heterocyclization under Vilsmeier-Haack conditions with the participation of the dimethylamino group to form quinazolinium salts. The oxazole ring can also be formylated at the free 4 position. In alkaline medium the quinazolinium ring is readily hydrolyzed with desalkylation.
Databáze: OpenAIRE