143032-08-0

Basic information

• Product Name: 1H-Pyrazole, 4-bromo-1,3,5-triphenyl-
• CAS NO: 143032-08-0
• Molecular Formula: C21H15BrN2
• Molecular Weight: 375.267
• Mol File: 143032-08-0.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 1H-Pyrazole, 4-bromo-1,3,5-triphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Pyrazole, 4-bromo-1,3,5-triphenyl-(143032-08-0)
• EPA Substance Registry System: 1H-Pyrazole, 4-bromo-1,3,5-triphenyl-(143032-08-0)

Safety Data

• Hazardous Substances Data: 143032-08-0(Hazardous Substances Data)

Upstream product

• 614-47-1 1,3-diphenyl-propen-3-one 
• 1428978-91-9 (E)-1-((E)-1,3-diphenylallylidene)-2-phenylhydrazine 
• 120-46-7 1,3-diphenylpropanedione 
• 100-63-0 phenylhydrazine 
• 1704-15-0 3-hydroxy-1,3-diphenyl-2-propen-1-one 
• 2183-27-9 1,3,5-triphenyl-1H-pyrazole 

Downstream Products

• 143032-07-9 Benzenesulfonyl-(1,3,5-triphenyl-1H-pyrazol-4-yl)-acetonitrile 
• 1387506-60-6 4-bromo-2-methyl-1,3,5-triphenyl-1H-pyrazol-2-ium tetrafluoroborate 
• 1428979-44-5 1,3,5-triphenyl-4-(p-tolyl)-1H-pyrazole 
• 92-52-4 biphenyl 
• 2183-27-9 1,3,5-triphenyl-1H-pyrazole 
• 7189-13-1 1,3,4,5-tetraphenyl-1H-pyrazole 

Relevant articles and documents

Synthesis, characterization and aggregation induced enhanced emission properties of tetraaryl pyrazole decorated cyclophosphazenes

A series of cyclotriphosphazenes N3P3(O-C6H4-C3N2-(C6H5)3)6 (3), N3P3(O2C12H8)(O-C6/

AIEE phenomenon: Tetraaryl vs. triaryl pyrazoles

Tetraarylpyrazoles are synthesized from commercially available materials in three steps and found to exhibit Aggregation Induced Emission Enhancement (AIEE) characteristics. Removing one aryl unit from tetraarylpyrazole leads to Aggregation Caused Quenching (ACQ), thus the number of aryl groups plays an important role in exploring such a phenomenon.

Correlation of spectroscopically determined ligand donor strength and nucleophilicity of substituted pyrazoles

The relative ligand donor strengths of 10 pyrazole-derived ligands has been determined with great accuracy, making use of the interdependence between the donor strength of the co-ligand and the 13C NMR chemical shift of the iPr2-bimy carbene signal in trans-[PdBr2( iPr2-bimy)L] complexes (iPr2-bimy = 1,3-diisopropylbenzimidazolin-2-ylidene; L = pyrazole-derived ligand). Even subtle variations in the substitution pattern of the pyrazole backbone up to three bonds away from the coordinating nitrogen could be detected reliably using this methodology. Alkylation experiments conducted on the pyrazoles using electrophiles of varied reactivity (ethyl bromide, ethyl iodide, and trimethyloxonium tetrafluoroborate) served as a benchmark to rank the pyrazoles in three groups of gradually increasing nucleophilicity, which correlated well with their determined donor strength.