37703-62-1

Basic information

• Product Name: (5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methanone
• Synonyms: (5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methanone
• CAS NO: 37703-62-1
• Molecular Weight: 392.845
• Mol File: 37703-62-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methanone(CAS DataBase Reference)
• NIST Chemistry Reference: (5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methanone(37703-62-1)
• EPA Substance Registry System: (5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methanone(37703-62-1)

Safety Data

• Hazardous Substances Data: 37703-62-1(Hazardous Substances Data)

Upstream product

• 188047-58-7 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4?carbonyl chloride 
• 89-25-8 edaravone 

Downstream Products

• 37703-70-1 4-ethyl-3,5-dimethyl-1,7-diphenyl-4,7-dihydro-1H-pyrano[2,3-c;6,5-c']dipyrazol-4-ol 
• 37703-77-8 3,5-dimethyl-1,7-diphenyl-1H-pyrano[2,3-c:6,5-c]dipyrazol-4(7H)-thione 
• 37703-73-4 4-(3-dimethylamino-propyl)-3,5-dimethyl-1,7-diphenyl-4,7-dihydro-1H-pyrano[2,3-c;6,5-c']dipyrazol-4-ol 
• 37703-66-5 3,5-dimethyl-1,7-diphenyl-1H-pyrano[2,3-c:6,5-c]dipyrazol-4(7H)-one 

Relevant articles and documents

Heterocyclic analogues of xanthone and xanthione. 1H-pyrano[2,3-c:6,5-c] dipyrazol-4(7H)-ones and thiones: Synthesis and NMR data

The synthesis of the title compounds is described. Reaction of 1-substituted 2-pyrazolin-5-ones with 5-chloro-1-phenyl-1H-pyrazole-4-carbonyl chloride or 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbonyl chloride, respectively, using calcium hydroxide in refluxing 1,4-dioxane gave the corresponding 4-heteroaroylpyrazol-5-ols, which were cyclized into 1H-pyrano[2,3-c:6,5-c]dipyrazol-4(7H)-ones by treatment with K 2CO3/DMF. The latter were converted into the corresponding thiones upon reaction with Lawesson's reagent. Detailed NMR spectroscopic investigations (1H, 13C, 15N) of the ring systems and their precursors are presented.