2294-94-2

Basic information

• Product Name: 1,1,1,2-Tetraphenylethane
• Synonyms: 1,1,1,2-Tetraphenylethane
• CAS NO: 2294-94-2
• Molecular Formula: C₂₆H₂₂
• Molecular Weight: 334.4529
• Mol File: 2294-94-2.mol
• Article Data: 15

Chemical Properties

• Melting Point: 144.8°C
• Boiling Point: 406.25°C (rough estimate)
• Flash Point: 204.9°C
• Appearance: /
• Density: 1.0862 (estimate)
• Refractive Index: 1.8430 (estimate)
• CAS DataBase Reference: 1,1,1,2-Tetraphenylethane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,1,2-Tetraphenylethane(2294-94-2)
• EPA Substance Registry System: 1,1,1,2-Tetraphenylethane(2294-94-2)

Safety Data

• Hazardous Substances Data: 2294-94-2(Hazardous Substances Data)

Usage

General Description

1,1,1,2-Tetraphenylethane is a chemical compound consisting of a central carbon atom surrounded by four phenyl groups. It is a symmetrical molecule with rigid molecular structure, making it useful as a building block in organic synthesis. This chemical is primarily used in the field of materials science and organic chemistry as a model compound for studying the reactivity and physical properties of organic molecules. Due to its unique structure, 1,1,1,2-Tetraphenylethane has potential applications in the development of new materials such as polymers and advanced electronic devices. Additionally, it is also used as a ligand in coordination chemistry and for its fluorescent properties in organic light-emitting diodes.

Upstream product

• 574-42-5 benzhydryl ether 
• 1062-42-6 succinic acid dibenzhydryl ester 
• 71964-91-5 benzhydryl-trimethyl-ammonium; bromide 
• 60-29-7 diethyl ether 
• 76-83-5 trityl chloride 
• 555-96-4 Benzylhydrazine 
• 6921-34-2 benzylmagnesium chloride 
• 71-55-6 1,1,1-trichloroethane 
• 71-43-2 benzene 
• 630-16-0 1,1,1,2-tetrabromo-ethane 
• 466-37-5 benzopinacolone 
• 100-52-7 benzaldehyde 
• 141-78-6 ethyl acetate 
• 776-74-9 Bromodiphenylmethane 

Downstream Products

• 101-81-5 Diphenylmethane 
• 519-73-3 triphenylmethane 
• 1528-27-4 triphenylmethyl potassium 
• 108-88-3 toluene 
• 595-91-5 triphenylacetic acid 
• 538-86-3 benzyl methyl ether 
• 596-31-6 methoxytriphenylmethane 
• 76-84-6 triphenylmethyl alcohol 
• 632-51-9 1,1,2,2-tetraphenylethylene 

Relevant articles and documents

Very large counteranion modulation of cationic metallocene polymerization activity and stereoregulation by a sterically congested (perfluoroaryl)fluoroaluminate

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Activation of heteroallenes by coordinatively unsaturated nickel(II) alkyl complexes supported by the hydrotris(3-phenyl-5-methyl)pyrazolyl borate (TpPh,Me) ligand

Activation of sulfur containing heteroallenes by nickel(ii) alkyl complexes supported by the bulky hydrotris(3-phenyl-5-methylpyrazolyl)borate (TpPh,Me) ligand is described. Exposure of TpPh,MeNiCH2Ph (1a) and TpPh,MeNiCH2Si(CH3)3 (1b) to CS2 resulted in formation of the insertion products TpPh,MeNi(η2-CS2)CH2Ph (2a) and TpPh,MeNi(η2-CS2)CH2Si(CH3)3 (2b) in moderate yields. Reaction of 1a and MeNCS produced two species in a 1:1 ratio, identified as TpPh,MeNi(η2-MeNC)CH2Ph (3) and TpPh,MeNi(η2-MeNCS)SCH2Ph (4). Isolation of the unexpected insertion product (3) prompted an investigation into the activity of 1a-b in the presence of isocyanides (i.e.tBuNC), which resulted in isolation of TpPh,MeNi(η2-tBuNC)CH2Ph (5a) and TpPh,MeNi(η2-tBuNC)CH2Si(CH3)3 (5b). Similarly, reaction of 1a with OCS led to the isolation of a rare example of a Ni(i) carbonyl species TpPh,MeNiCO (6). Alternatively, complex 6 was also formed by exposure of 1a-b to an atmosphere of CO. Isolation of the intermediate species (TpPh,MeNi(η2-CO)CH2TMS (7b) and TpPh,MeNi(CO)(C(O)R, (8a-b) with R = Ph, TMS)) shed light on the formation of such species.

Nucleophilicity of Alkyl Zirconocene and Titanocene Precatalysts, and Kinetics of Activation by Carbenium Ions and by B(C6F5)3

Kinetics of activation of methyl and benzyl metallocene precatalysts by benzhydrylium ions, tritylium ions, and triarylborane B(C6F5)3were measured spectrophotometrically. The rate constants correlate linearly with the electrophilicity parameter E of the benzhydrylium and tritylium ions employed, allowing us to determine the σ-nucleophilicities of the metal–carbon bond of several zirconocenes and titanocenes. Bridging, substitution, metal, and ligand effects on the rates of metal–alkyl bond cleavage (M=Zr, Ti) were studied and structure–reactivity correlations were used to predict the kinetics of generation of metallocenium ions pairs, which are active catalysts in polymerization reactions and are highly electrophilic Lewis acids in frustrated Lewis pair catalysis.

Reduction of carbonyl to methylene: Organosilane-Ga(OTf)3 as an efficient reductant system

Direct carbonyl reduction to methylene has been achieved by mild reductant system obtained from the combination of organosilane and gallium (III) trifluoromethanesulfonate {Ga(OTf)3}, a water tolerant, recyclable, catalyst. Among a series of organosilanes studied, dimethylchlorosilane (Me 2SiHCl, DMCS) showed the highest efficiency. Both aromatic and aliphatic ketones were effectively reduced to the corresponding methylene products with high functional groups tolerance, under very mild conditions in a relatively short period of time with good to excellent yields. Graphical Abstract: [Figure not available: see fulltext.]