97458-95-2

Upstream product

• 791638-32-9 2-[Methoxy(oxo)acetyl]benzoesaeure 
• 1073-70-7 4-chlorophenylhydrazine hydrochloride 
• 14736-50-6 o-(methoxycarbonylmethyl)benzoic acid 
• 124-41-4 sodium methylate 
• 86671-86-5 4-(4-Chlorophenylhydrazono)-1H-2-benzopyran-1,3(4H)-dione 

Downstream Products

• 86671-87-6 2-(4-Chlorophenyl)-1(2H)-phthalazinone-4-carboxylic acid chloride 
• 1415648-01-9 4-amino-2-(4-chlorophenyl)phthalazin-1(2H)-one 
• 1415647-89-0 3-(4-chlorophenyl)-4-oxo-3,4-dihydrophthalazine-1-carbonyl azide 
• 86662-15-9 3-(4-chlorophenyl)-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid 

Relevant academic research and scientific papers

Facile synthesis of novel 7-aminofuro- and 7-aminothieno[2,3-d]pyridazin- 4(5H)-one and 4-aminophthalazin-1(2H)-ones

We hereby report the synthesis of a novel class of compounds, 7-aminofuro- and 7-aminothieno[2,3-d]pyridazin-4(5H)-one and 4-aminophthalazin-1(2H)-ones starting from methyl 2-(2-methoxy-2-oxoethyl)furan- and thiophene-3-carboxylate and methyl 2-(2-methoxy

Reactions of Azocoupled Homophthalic Anhydride with Nucleophiles

Azocoupled homophthalic anhydride (1) gives 1,3(2H,4H)-isoquinolinedione derivatives (4) with aliphatic and aromatic primary amines.However, with sodium hydroxide, alkoxide and borohydride as well as with ammonia and secondary amines, it undergoes ring opening and subsequent recyclization reactions to give 4-substituted 2-aryl-1(2H)-phthalazinone derivatives.