5216-31-9

Basic information

• Product Name: 4,4'-DIFLUORODIPHENYLACETYLENE
• Synonyms: 4,4'-DIFLUORODIPHENYLACETYLENE;1,2-Bis(4-fluorophenyl)ethyne
• CAS NO: 5216-31-9
• Molecular Formula: C₁₄H₈F₂
• Molecular Weight: 214.2101264
• Mol File: 5216-31-9.mol
• Article Data: 79

Chemical Properties

• Melting Point: 92-94 °C
• Boiling Point: 291.9±25.0 °C(Predicted)
• Appearance: /
• Density: 1.21±0.1 g/cm3(Predicted)
• Storage Temp.: Sealed in dry,Room Temperature
• CAS DataBase Reference: 4,4'-DIFLUORODIPHENYLACETYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-DIFLUORODIPHENYLACETYLENE(5216-31-9)
• EPA Substance Registry System: 4,4'-DIFLUORODIPHENYLACETYLENE(5216-31-9)

Safety Data

• HazardClass: IRRITANT
• Hazardous Substances Data: 5216-31-9(Hazardous Substances Data)

Usage

General Description

4,4'-DIFLUORODIPHENYLACETYLENE is a chemical compound with the molecular formula C14H6F2. It is a colorless solid that is insoluble in water and soluble in organic solvents. 4,4'-DIFLUORODIPHENYLACETYLENE is used as a building block in organic synthesis and is a key component in the production of organic electronic materials such as OLEDs (organic light-emitting diodes) and OLED displays. It is also used as a fluorescent probe in biochemical and medical research, as well as in the production of polymers and pharmaceuticals. 4,4'-DIFLUORODIPHENYLACETYLENE is a versatile and important compound in the field of organic chemistry and materials science.

Upstream product

• 352-34-1 4-fluoro-1-iodobenzene 
• 1066-54-2 trimethylsilylacetylene 
• 471-25-0 Propiolic acid 
• 766-98-3 1-ethynyl-4-fluorobenzene 
• 460-00-4 1-Bromo-4-fluorobenzene 
• 23349-10-2 4,4'-(2-bromoethene-1,1-diyl)bis(fluorobenzene) 
• 5676-81-3 4-fluorobenzalaniline 
• 148004-76-6 (4-Fluorophenyl)methyl-1H-benzotriazole 
• 148004-78-8 (4-fluorophenyl)methyl-2H-benzotriazole 
• 865-47-4 potassium tert-butylate 
• 565-04-8 α,α,α',α'-tetrachloro-4,4'-difluoro-bibenzyl 
• 95895-33-3 1-(bromoethynyl)-4-fluorobenzene 
• 706-06-9 3-(4-flurophenyl)prop-2-ynoic acid 
• 459-45-0 4-fluorobenzenediazonium tetrafluoroborate 

Downstream Products

• 1208341-98-3 7-fluoro-3-(4-fluorophenyl)-1,2-dipropylnaphthalene 
• 1208342-15-7 7-fluoro-1,2,3-tris(4-fluorophenyl)naphthalene 
• 1332835-92-3 C₂₁H₁₅F₂NO 
• 1332835-86-5 C₂₃H₁₇F₂NO₂ 
• 1431317-93-9 2-benzyl-3,4-bis(4-fluorophenyl)-1-methylnaphthalene 
• 1224447-48-6 2,3-bis(4-fluorophenyl)benzo[b]furan 
• 1447064-76-7 2,3-bis(4-fluorophenyl)-1-(pyrimidin-2-yl)-1H-indole 
• 1223047-89-9 (Z)-1-(2-phenyl-2-p-fluorophenylvinyl)-4-fluoro benzene 
• 628320-79-6 2,3-bis(4-fluorophenyl)-1H-indole 
• 1564265-71-9 ethyl 4,5-bis(4-fluorophenyl)-3-oxo-2-phenylcyclopenta-1,4-dienecarboxylate 
• 1338935-77-5 3,4-bis(4-methoxyphenyl)-1,1-dimethyl-1H-isochromene 
• 1609133-00-7 C₃₇H₂₀F₄O₃ 

Relevant articles and documents

Mechanochemical Synthesis of Diarylethynes from Aryl Iodides and CaC 2

A mechanochemical synthesis of diarylethynes from aryl iodides and calcium carbide as acetylene source is reported. The reaction is catalyzed by a palladium catalyst in the presence of copper salt, base, and ethanol as liquid assisting grinding (LAG) additive. Various aryl and heteroaryl iodides have been converted in up to excellent yields.

Synthesis and Photophysical Study of Heteropolycyclic and Carbazole Motif: Nickel-Catalyzed Chelate-Assisted Cascade C-H Activations/Annulations

Herein, nickel-catalyzed synthesis of polyarylcarbazole through sequential C-H bond activations has been described. Regioselective indole C2/C3 functionalization has been achieved in the presence of indole C7-H, which is quite challenging. In addition, this approach also gives easy access to building a heteropolycyclic motif through C6/C7 C-H functionalization of indoline. This methodology is not limited to aromatic internal alkynes as coupling partners; aliphatic alkynes have also shown good tolerance. Notably, during the optimization the catalytic enhancement with sodium iodide as an additive has been observed. We have also studied the photophysical properties of these highly conjugated molecules.

Palladium-Catalyzed Cascade Dearomative Spirocyclization and C?H Annulation of Aromatic Halides with Alkynes

Described herein is a palladium-catalyzed intermolecular dearomative annulation of aryl halides with alkynes, which provides a rapid approach to a class of structurally unique spiroembedded polycyclic aromatic compounds. The cascade process is accomplished by a sequential alkyne migratory insertion, Heck-type dearomatization, and C-H bond annulation. Further optoelectronic study indicated this fused spirocyclic scaffold could be a potential host material for OLEDs, as exemplified by a fabricated red PhOLED device with a maximum external quantum efficiency of 23.0%.