82937-08-4

Basic information

• Product Name: methyl 3-methyl-1-phenyl-1H-furo<2,3-c>pyrazole-5-carboxylate
• Synonyms: methyl 3-methyl-1-phenyl-1H-furo<2,3-c>pyrazole-5-carboxylate
• CAS NO: 82937-08-4
• Molecular Weight: 256.261
• Mol File: 82937-08-4.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: methyl 3-methyl-1-phenyl-1H-furo<2,3-c>pyrazole-5-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 3-methyl-1-phenyl-1H-furo<2,3-c>pyrazole-5-carboxylate(82937-08-4)
• EPA Substance Registry System: methyl 3-methyl-1-phenyl-1H-furo<2,3-c>pyrazole-5-carboxylate(82937-08-4)

Safety Data

• Hazardous Substances Data: 82937-08-4(Hazardous Substances Data)

Upstream product

• 89-25-8 edaravone 
• 1781-33-5 4-diazo-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one 
• 922-67-8 propynoic acid methyl ester 

Relevant articles and documents

1,3-Dipolar Cycloaddition Reactions of Diazopyrazolinones with Electron-Deficient Dipolarophiles

A study of the reactivity of a series of 4-diazopyrazolin-5-ones toward dipolar cycloaddition with electron-deficient olefinic and acetylenic dipolarophiles has been carried out.Reactions with dimethyl acetylenedicarboxylate afford pyrazolotriazin-7-ones which result from dipolar cycloaddition followed by a van Alphen-Huttel rearrangement of the initially produced spiro 3H-pyrazole adducts.Reaction with unsymmetrical acetylenic esters afforded variable mixtures of regioisomeric pyrazolotriazinones and 1H-furopyrazoles.Product formation has been rationalized in terms of a sustituent-dependent partitioning between spiro 3H-pyrazole adducts and ring-opened diazoalkanes.Spirocarboxylate esters were the only products isolated from reactions with acrylate ester.