Synthesis And Reactions Of Some Pyridazine Derivatives

Faculty	Science	Year:	2005
Type of Publication:	Theses	Pages:	166
Authors:	Mohamed Ahmed Mohamed El- Abbasy
		BibID	3215728
Keywords :	organic chemistry
Abstract:	Scheme 1Reaction of amino-ester 1 with ethoxycarbonyl isothiocyanate led to the formation of thiourea derivative 12. Compound 12 is cyclized to 2-ethoxycarbonylaminopyridazino[5`,4`:3,4]thieno[3,2-d]-1,3-thiazin-4-one derivative 13 by action of sulfuric acid, and

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