Synthesis and reactions of some arylazo derivatives of B-diketones

ABSTRACT

Claisen condensation of both visnaginone methyl ether and Khellinone methyl benzoate lead to the formation of w-benzoatovisnaginone methyl ether and w-benzoate-Khellinone methyl ether. The B-diketones couple with aromatic diazonium compounds in the presence of sodium acetate to give the arylazo compounds. The arylazo compounds react with diazomethane, hydrazine hydrate, phenylhydrazine or hydroxylamine hydrochloride to form pyrazole or isoxazole derivatives