Synthesis of amidrazones from 2-ethoxycarbonyl-4H-3,1benzoxazin-4-one

ABSTRACT

In aprevious publication [1], the authors gave a report of the reaction of 2-lethoxycarbonyl-4H-3,l-benzoxazin-4-one [I] with certain amino compounds. In continuation, we decided to study the behaviour of [1] with hydrazine and its derivatives. Bogert [2] reported that direct interaction of [I] with hydrazine and phenylhydrazine yielded 3-amino-4[3H]-quinazolone derivatives. In the present investigation, the reaction of [I] with phenylhydrazine and carboxyl-ic acid hydrazides in dioxane or ethanol yielded compounds of the general formula [III], which were shown to be oxalmonoamidrazone derivatives