444902-78-7

Basic information

• Product Name: ethyl 5-oxo-1,7-diphenyl-1,5-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate
• Synonyms: ethyl 5-oxo-1,7-diphenyl-1,5-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate
• CAS NO: 444902-78-7
• Molecular Formula: C20H16N4O3
• Molecular Weight: 360.36604
• Mol File: 444902-78-7.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: ethyl 5-oxo-1,7-diphenyl-1,5-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl 5-oxo-1,7-diphenyl-1,5-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate(444902-78-7)
• EPA Substance Registry System: ethyl 5-oxo-1,7-diphenyl-1,5-dihydro[1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate(444902-78-7)

Safety Data

• Hazardous Substances Data: 444902-78-7(Hazardous Substances Data)

Upstream product

• 100-34-5 benzene diazonium chloride 
• 242475-01-0 ethyl 3-oxo-2[(6-phenyl-4-oxo-pyrimidin-2-yl)thio]butanoate 
• 36822-11-4 6-phenyl-2-thiouracil 
• 56035-29-1 2-methylthio-6-phenyl-3,4-dihydropyrimidin-4-one 
• 28663-68-5 ethyl (phenylhydrazono)chloroacetate 

Relevant articles and documents

A facile one-pot regioselective synthesis of [1,2,4]triazolo[4,3-a]5(1H)-pyrimidinones via tandem Japp-Klingemann, smiles rearrangement, and cyclization reactions

Coupling of active [(4-oxo-6-phenyl-3H-pyrimidin-2-yl)thio]methine compounds (3) with diazotized anilines in the presence of base gave [1,2,4]triazolo[4,3-a]pyrimidines (7). The latter products were also obtained by reactions of hydrazonoyl chlorides (10)