126134-55-2

Upstream product

• 121232-61-9 3-(benzoylmethyl)-2H-pyrido<1,2-b>-as-triazin-2-one 
• 622-88-8 4-bromophenylhydrazine hydrochloride 
• 126134-54-1 3-<2-(4-bromophenylhydrazono)-2-phenylethyl>-2H-pyrido<1,2-b>-as-triazin-2-one 

Relevant academic research and scientific papers

Synthesis of New Zitterionic Pyridazino-as-triazines

Reaction of the furopyrido-as-triazinium salt 1 with methyl hydrazine gave the zwitterionic 1-substituted pyrido-pyridazino-as-triazine 4.The neutral 2-substituted isomer 6 was formed when 1 was treated with 1-formyl-1-methyl-hydrazine.Reaction of 1 with 1-acyl-2-methylhydrazine gave rise to 1,3,4-trisubstituted zwitterionic derivatives of the same ring system.Efforts to synthesize aryl-substituted zwitterions led to simultaneous formation of the desired compound 12 and of a new ring transformation product, the pyrazolopyrido-as-triazine derivative 15.