145490-44-4

Upstream product

• 145490-37-5 3-phenylpyrazol-5-yl diazonium chloride 
• 60269-82-1 4-phenyl-6-methylpyrazolo<5,1-c>-1,2,4-triazine-7-carbonitrile 
• 108-24-7 acetic anhydride 
• 145490-41-1 8-amino-4-phenylthieno<4,3-e>pyrazolo<5',1'-c'>-1,2,4-triazine 

Downstream Products

• 145490-45-5 8-amino-3,6-dibromo-4-phenylthieno<4,3-e>pyrazolo<5',1'-c'>-1,2,4-triazine 

Relevant academic research and scientific papers

STUDIES WITH ALKYLHETEROCYCLIC CARBONITRILES: A NOVEL SYNTHETIC ROUTE TO SEVERAL NEW ANNELATED PYRAZOLO-1,2,4,-TRIAZINE DERIVATIVES

3-Phenylpyrazol-5-yl diazonium chloride (1a) was coupled with 2-aminocrotonitrile (4) to afford 4-phenyl-6-methylpyrazolo-1,2,4-triazine-7-carbonitrile (5).Upon reaction with sulfur, compound 5 was transformed into 8-amino-4-phenylthienopyra