90276-21-4

Basic information

• Product Name: 1H-Pyrazole, 1-(4-bromophenyl)-3-methyl-5-phenyl-
• CAS NO: 90276-21-4
• Molecular Formula: C16H13BrN2
• Molecular Weight: 313.197
• Mol File: 90276-21-4.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1H-Pyrazole, 1-(4-bromophenyl)-3-methyl-5-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Pyrazole, 1-(4-bromophenyl)-3-methyl-5-phenyl-(90276-21-4)
• EPA Substance Registry System: 1H-Pyrazole, 1-(4-bromophenyl)-3-methyl-5-phenyl-(90276-21-4)

Safety Data

• Hazardous Substances Data: 90276-21-4(Hazardous Substances Data)

Upstream product

• 622-88-8 4-bromophenylhydrazine hydrochloride 
• 1896-62-4 (E)-benzalacetone 
• 1428978-89-5 (Z)-1-(4-bromophenyl)-2-((E)-4-phenylbut-3-en-2-ylidene)hydrazine 
• 589-21-9 (4-bromophenyl)hydrazine 
• 93-91-4 1-phenylbutan-1,3-dione 

Relevant articles and documents

TBHP/Cu(OAc)2 mediated oxidation of pyrazolines: A convenient method for the preparation of pyrazoles

An efficient and simple oxidative protocol has been developed for the preparation of pyrazoles from pyrazolines mediated by TBHP/Cu(OAc)2 at room temperature. The present protocol has been successfully applied for the preparation of various pyrazole compounds from heterocyclic pyrazolines.

Highly regioselective synthesis of 1-aryl-3,4,5-substituted pyrazoles

A highly regioselective synthesis of 1-aryl-3,4,5-substituted pyrazoles based on the condensation of 1,3-diketones with arylhydrazines is described. The reaction proceeds at room temperature in N,N-dimethylacetamide and furnishes pyrazoles in 59-98% yield