18076-30-7

Basic information

• Product Name: 3,4,5-Triphenylpyrazole
• Synonyms: 3,4,5-Triphenylpyrazole;3,4,5-Triphenyl-1H-pyrazole
• CAS NO: 18076-30-7
• Molecular Formula: C₂₁H₁₆N₂
• Molecular Weight: 296.36514
• Mol File: 18076-30-7.mol
• Article Data: 16

Chemical Properties

• Melting Point: 229-230 °C
• Boiling Point: 445.8 °C at 760 mmHg
• Flash Point: 194.2 °C
• Appearance: /
• Density: 1.153 g/cm³
• Vapor Pressure: 1.01E-07mmHg at 25°C
• Refractive Index: 1.64
• PKA: 12.98±0.50(Predicted)
• CAS DataBase Reference: 3,4,5-Triphenylpyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4,5-Triphenylpyrazole(18076-30-7)
• EPA Substance Registry System: 3,4,5-Triphenylpyrazole(18076-30-7)

Safety Data

• Hazardous Substances Data: 18076-30-7(Hazardous Substances Data)

Usage

Synthesis Reference(s)

The Journal of Organic Chemistry, 43, p. 3370, 1978 DOI: 10.1021/jo00411a023Tetrahedron Letters, 9, p. 281, 1968

InChI:InChI=1/C21H16N2/c1-4-10-16(11-5-1)19-20(17-12-6-2-7-13-17)22-23-21(19)18-14-8-3-9-15-18/h1-15H,(H,22,23)

Upstream product

• 119-53-9 2-hydroxy-2-phenylacetophenone 
• 53870-17-0 methyl 3,4,5-triphenyl-4H-pyrazole-4-carboxylate 
• 1666-17-7 benzaldehyde p-toluenesulfonylhydrazone 
• 2510-95-4 2,3-diphenylacrylonitrile 
• 1817-57-8 4-phenyl-3-butyne-2-one 
• 536-74-3 phenylacetylene 
• 908093-98-1 diazodiphenylmethane 
• 119-61-9 benzophenone 
• 25229-62-3 4-methyl-N'-(1,3,3-triphenylallylidene)benzenesulfonohydrazide 
• 28995-88-2 1-methyl-4-((phenylethynyl)sulfonyl)benzene 
• 24378-05-0 methyl phenylethynyl sulfone 
• 1620400-69-2 C₂₀H₁₉BrN₂O 
• 13788-85-7 4-bromo-3,5-diphenyl-1H-pyrazole 
• 24037-48-7 3,3,5-triphenyl-3H-pyrazole 

Downstream Products

• 33314-40-8 1-(2-bromo-ethyl)-3,4,5-triphenyl-1H-pyrazole 
• 33314-51-1 3,4,5,3',4',5'-hexaphenyl-1H,1'H-1,1'-ethane-1,2-diyl-bis-pyrazole 
• 33314-38-4 1-methyl-3,4,5-triphenyl-1H-pyrazole 
• 33314-39-5 1-ethyl-3,4,5-triphenyl-1H-pyrazole 
• 33314-41-9 3,4,5-tris-(4-nitro-phenyl)-1H-pyrazole 
• 33314-49-7 3,4,5,3',4',5'-hexaphenyl-1H,1'H-1,1'-carbonyl-bis-pyrazole 
• 33314-43-1 4-(4-bromo-phenyl)-3,5-diphenyl-1H-pyrazole 
• 33314-42-0 4,4',4''-(1H-pyrazole-3,4,5-triyl)-tris-aniline 
• 108159-70-2 bis(3,4,5-triphenylpyrazol-1-yl)diazene 
• 99939-05-6 3,4,5-Triphenyl-1H-pyrazol-1-amin 

Relevant articles and documents

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Similarity and Differences in the Regioselectivities of Thermal and Acid-Catalyzed van Alphen–Hüttel Rearrangements in the Series of 3,3-Diphenyl-3H-pyrazoles Containing Electron-Withdrawing Substituents on C4 and C5

3,3-Diphenyl-3H-pyrazoles containing an electron-withdrawing substituent in the 5-position undergo van Alphen–Hüttel rearrangement with migration of one phenyl group to C4 on heating in an aprotic solvent (benzene, toluene), as well as on keepi

Functionalized pyrazoles as agents in C-C cross-coupling reactions

The 1-tetrahydropyranyl-(THP-)protected pyrazoles 4-R-pz(THP) (R=pinacolatoboryl=Bpin (3a(THP)), Me3Si (4a(THP)), Me3Sn (5a(THP)), and 4-R-3,5-Ph2pz (R=Bpin (3b(THP)), Me3Si (4b(THP)), Me3Sn (5b(THP))