Heterocyclic Compounds from β-Diketones. Part III. 2-Sulphanilamidoazoacetyl- and -benzoyl-acetones and their Cyclisation

2-Sulphanilamidoazoacetylacetones and 2-sulphanilimidoazobenzoylacetones have been obtained by the reaction of the diazotised solution of sulphanilamides with acetylacetone and benzoylacetone respectively. Their behaviours with hydrazine, semicarbazide, and hydroxylamine have been studied and cyclic compounds, such as pyrazole and isoxazole derivatives, prepared