87343-67-7

Basic information

• Product Name: 4-methyl-1-phenyl-1,2-dihydropyrano[2,3-c]pyrazole-3,6-dione
• Synonyms: 3-hydroxy-4-methyl-1-phenyl-1,6-dihydropyrano[2,3-c]pyrazol-6-one
• CAS NO: 87343-67-7
• Molecular Formula: C₁₃H₁₀N₂O₃
• Molecular Weight: 242.2301
• Mol File: 87343-67-7.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 467.9°C at 760 mmHg
• Flash Point: 236.8°C
• Density: 1.43g/cm³
• Vapor Pressure: 2.24E-09mmHg at 25°C
• Refractive Index: 1.681
• CAS DataBase Reference: 4-methyl-1-phenyl-1,2-dihydropyrano[2,3-c]pyrazole-3,6-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 4-methyl-1-phenyl-1,2-dihydropyrano[2,3-c]pyrazole-3,6-dione(87343-67-7)
• EPA Substance Registry System: 4-methyl-1-phenyl-1,2-dihydropyrano[2,3-c]pyrazole-3,6-dione(87343-67-7)

Safety Data

• Hazardous Substances Data: 87343-67-7(Hazardous Substances Data)

Upstream product

• 19933-22-3 1-phenyl-pyrazolidine-3,5-dione 
• 87343-66-6 3-(1-phenyl-3,5-dioxopyrazolidine-4-ylidene)butanoate d'ethyle 
• 87343-66-6 3-[3,5-Dioxo-1-phenyl-pyrazolidin-(4Z)-ylidene]-butyric acid ethyl ester 
• 95155-04-7 NSC₆₀₅₁₉₃ 
• 95155-02-5 N-(4-Chloro-phenyl)-3-[3,5-dioxo-1-phenyl-pyrazolidin-(4Z)-ylidene]-butyramide 
• 95155-01-4 3-[3,5-Dioxo-1-phenyl-pyrazolidin-(4Z)-ylidene]-butyric acid tert-butyl ester 
• 95155-00-3 3-[3,5-Dioxo-1-phenyl-pyrazolidin-(4Z)-ylidene]-butyric acid methyl ester 
• 95155-05-8 3-[3,5-Dioxo-1-phenyl-pyrazolidin-(4Z)-ylidene]-butyramide 

Relevant articles and documents

ETUDE DE LA REACTIVE DE COMPOSES ENAMINOCARBONYLES VIS-A-VIS DE LA 1-PHENYLPYRAZOLIDINE-3,5-DIONE

In acetic acid at room temperature, 3-amino-1-phenyl-2-buten-1-one, 4-amino-3-penten-2-one, various 3-aminocrotonic esters and amides react with 1-phenylpyrazolidin-3,5-dione to yield compounds resulting from the elimination of ammonia between the two precursors and the so obtained derivatives cyclize on heating to pyrano pyrazoles.The rates of these reactions are measured by 1H NMR spectroscopy and mechanistic interpretations are proposed.Under the same experimental conditions, β-dicarbonyl compounds are less reactive than the enaminocarbonyl analogues.