15754-94-6

Basic information

• Product Name: 4-bromo-1-(4-bromophenyl)pyrazole
• Synonyms: 4-bromo-1-(4-bromophenyl)pyrazole
• CAS NO: 15754-94-6
• Molecular Weight: 301.968
• Mol File: 15754-94-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4-bromo-1-(4-bromophenyl)pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 4-bromo-1-(4-bromophenyl)pyrazole(15754-94-6)
• EPA Substance Registry System: 4-bromo-1-(4-bromophenyl)pyrazole(15754-94-6)

Safety Data

• Hazardous Substances Data: 15754-94-6(Hazardous Substances Data)

Upstream product

• 15115-52-3 4-bromo-1-phenyl-1H-pyrazole 
• 2075-45-8 4-bromo-1H-pyrazole 
• 106-37-6 1.4-dibromobenzene 
• 1379475-55-4 2-(4-bromophenyl)-5-(4-chlorophenyl)-4-(4-morpholino-3-bromo-1-aza-1,3-butadien-1-yl)-1,2,3-triazole 
• 622-88-8 4-bromophenylhydrazine hydrochloride 
• 589-87-7 1,4-bromoiodobenzene 

Relevant articles and documents

Design and Synthesis of Novel Organic Luminescent Materials Based on Pyrazole Derivative

Five new materials based on pyrazole derivatives have been synthesized and characterized as organic light-emitting devices. This report presents a novel approach to combine pyrazole with aromatic hydrocarbons via methylene. The formed molecules exhibited twisted structures, which resulted in high glass transition temperatures (Tg), which ranged from 83.0 to 101.1°C. They also had high optical band gaps (Eg); most of their optical band gaps are determined by the absorption edge technique as 3.43 to 3.66?eV, evaluated photophysical properties of these synthesized novel chromophores, the optical properties such as maximum absorption and emission wavelengths (λ; nm), molar extinction coefficients (ε; cm?1·M?1), Stokes' shifts (ΔλST; nm), and quantum yields (φF). These compounds exhibited intense absorption bonds between 230 and 350?nm, and the effect of solvent polarity on emission of these pyrazole derivatives was also studied. In addition, they showed blue fluorescence in different solvents and bathochromic shift with the increase in the solvent polarity.

Reactivity of 1,2,3-triazole-substituted 1-azabutadienes (vinamidines)

The reactivity of the new 1,2,3-triazole-substituted vinamidines (i.e. 1-azabutadienes) was investigated. They were used as synthons to obtain new pyrazole, di-1,2,3-triazole as well as 4-amino-1,2,3-triazole derivatives. The Diels-Alder reaction with inverse electronic demand (using dimethyl 1,2,4,5-tetrazin-3,6-dicarboxylate as reagent) resulted in the formation of a new pyridazine derivative. ARKAT-USA Inc.