140939-06-6

Basic information

• Product Name: 1H-Pyrazole-4,5-dione, 3-(4-chlorobenzoyl)-1-phenyl-
• CAS NO: 140939-06-6
• Molecular Formula: C16H9ClN2O3
• Molecular Weight: 312.712
• Mol File: 140939-06-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1H-Pyrazole-4,5-dione, 3-(4-chlorobenzoyl)-1-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Pyrazole-4,5-dione, 3-(4-chlorobenzoyl)-1-phenyl-(140939-06-6)
• EPA Substance Registry System: 1H-Pyrazole-4,5-dione, 3-(4-chlorobenzoyl)-1-phenyl-(140939-06-6)

Safety Data

• Hazardous Substances Data: 140939-06-6(Hazardous Substances Data)

Upstream product

• 103344-71-4 (Z)-4-(4-chlorophenyl)-2-hydroxy-4-oxobut-2-enoic acid 
• 100-34-5 benzene diazonium chloride 
• 217474-43-6 4-(4-Chloro-phenyl)-2,4-dioxo-3-(phenyl-hydrazono)-butyric acid 

Downstream Products

• 188935-74-2 4-(4-Chloro-phenyl)-2,4-dioxo-3-(phenyl-hydrazono)-butyric acid methyl ester 

Relevant articles and documents

FIVE-MEMBERED 2,3-DIOXOHETEROCYCLES. XXIII. SYNTHESIS OF 1-ARYL-3-AROYL-4,5-DIHYDRO-4,5-PYRAZOLEDIONES AND THEIR REACTION WITH WATER AND ALCOHOLS

4-Aroyl-3-arylhydrazono-2,4-dioxobutyric acids were obtained by the azo coupling of aroylpyruvic acids with arenediazonium salts. Under the influence of thionyl chloride (benzene, 78 deg C, 1.5-4h) they undergo cyclization to 1-aryl-3-aroyl-4,5-dihydro-4,