A New Approach for the Synthesis of Some Fused Pyrazolo-, Triazolo-, Tetrazolo-, Diazepino-, Oxazepino-, and Thiazepinopyridazine Derivatives
作者:Alyaa A. Shalaby
DOI:10.1080/10426500307951
日期:2003.2.1
in aceticacid or 3-chloropyridazine derivative 2 in ethanol afforded the pyrazolo[3,4-c]pyridazine derivative 3 . While boiling 1a with hydrazine hydrate in ethanol gave the corresponding hydrazono derivative 4 . Reaction of compound 2 with benzhydrazide in refluxing 1-butanol yielded triazolo[4,3-b]pyridazine 5 . On treatment of 2 with sodium azide tetrazolopyridazine 6 resulted. The reaction of