REACTIONS OF O-BROMOACETYLACYLPHENONES WITH SEVERAL PRIMARY AMINES

o-Monobromoacetylacylphenones, 3a and 3b reacted with hydroxylamine or hydrazine hydrate to produce heterocycles, 2,3-benzoxazine or phthala zine derivatives. The reaction of bromoacetyl group of 3a and 3b with several thioamides afforded thiazole derivatives in high yields. Where as o-dibromoacetyl-benzophenoe 2a reacted with aniline or cyclohexylam ine to produce non-heterocycles, 2-substituted-iminophenylindanones an d the mechanism for the formation of these non-heterocycles is propose d.