Abstract
It has been shown that 3-phenylimidazo[5, 1-b]benzoxazole (I) is stable under conditions of alkaline and acid hydrolysis. When I is oxidized with potassium permanganate, 2-benzoylbenzoxazole is formed. A series of 1-substituted derivatives of I has been obtained by its nitration and bromination and by the Vilsmeier and Mannich reactions. Nitrosation, hydroxymethylation, acetylation, and cyanoethylation reactions of I could not be carried out by the usual methods.
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