289655-92-1

Basic information

• Product Name: 3-methyl-4-phenoxy-1H-pyrazol-5(4H)-one
• Synonyms: 3-methyl-4-phenoxy-1H-pyrazol-5(4H)-one
• CAS NO: 289655-92-1
• Molecular Weight: 190.202
• Mol File: 289655-92-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-methyl-4-phenoxy-1H-pyrazol-5(4H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-methyl-4-phenoxy-1H-pyrazol-5(4H)-one(289655-92-1)
• EPA Substance Registry System: 3-methyl-4-phenoxy-1H-pyrazol-5(4H)-one(289655-92-1)

Safety Data

• Hazardous Substances Data: 289655-92-1(Hazardous Substances Data)

Upstream product

• 2555-49-9 phenoxyacetic acid ethyl ester 
• 75-36-5 acetyl chloride 

Relevant articles and documents

A novel route to 4-oxy/thio substituted-1H-pyrazol-5(4H)-ones via efficient cross-Claisen condensation

α-Oxy/thio substituted β-keto esters were synthesized through an efficient cross-Claisen condensation of oxy/thio substituted acetic acid ethyl esters with acid chlorides, which in turn converted in situ into 4-oxy/thio substituted-1H-pyrazol-5(4H)-ones by the addition of hydrazine and its derivatives. This method has been found to be extremely fast, general, and useful toward the synthesis of inaccessible pyrazolones and synthetically demanding 4-oxy/thio substituted pyrazolones.