The reaction of ethyl benzoylacetate with malononitrile: a novel synthesis of some pyridazine, pyridazino[2,3- a ]quinazoline and pyrrole derivatives
作者:Fathy M Abdelrazek、Abdellatif M Salah El-Din、Ahmed E Mekky
DOI:10.1016/s0040-4020(00)01153-4
日期:2001.2
and coupled with diazonium salts to afford azo derivatives. These azo derivatives and those of ethyl benzoylacetate could be cyclized into 4-oxo-, 6-oxo- and 6-iminopyridazines and pyridazino[2,3-a]quinazolines, respectively. The 6-iminopyridazines could be transformed into the 6-oxopyridazines. The imino- and oxopyridazines could be transformed into pyrrole derivatives.