73790-20-2

Basic information

• Product Name: Ethanedione, bis[4-(trifluoromethyl)phenyl]-
• Synonyms: 1,2-Bis[4-(trifluoromethyl)phenyl]-1,2-ethanedione;1,2-Bis(4-trifluoromethylphenyl)-ethan-1,2-dione;4,4'-Bis(trifluoromethyl)benzil;Ethanedione,bis[4-(trifluoromethyl)phenyl];1,2-bis(p-trifluoromethylphenyl)ethanedione;1,2-bis(4-(trifluoromethyl)phenyl)ethane-1,2-dione
• CAS NO: 73790-20-2
• Molecular Formula: C16H8F6O2
• Molecular Weight: 346.229
• Mol File: 73790-20-2.mol

Chemical Properties

• Melting Point: 134-136 °C(Solv: ethanol (64-17-5))
• Boiling Point: 378.6±42.0 °C(Predicted)
• Density: 1.399±0.06 g/cm3(Predicted)
• CAS DataBase Reference: Ethanedione, bis[4-(trifluoromethyl)phenyl]-(CAS DataBase Reference)
• NIST Chemistry Reference: Ethanedione, bis[4-(trifluoromethyl)phenyl]-(73790-20-2)
• EPA Substance Registry System: Ethanedione, bis[4-(trifluoromethyl)phenyl]-(73790-20-2)

Safety Data

• Hazardous Substances Data: 73790-20-2(Hazardous Substances Data)

Upstream product

• 2967-66-0 methyl 4-(trifluoromethyl)benzoate 
• 402-43-7 p-trifluoromethylphenyl bromide 
• 95-92-1 oxalic acid diethyl ester 
• 73627-36-8 1,2-bis[4-(trifluoromethyl)phenyl]-2-hydroxyethanone 
• 66659-90-3 1,2-bis[4-(trifluoromethyl)phenyl]ethanone 
• 455-19-6 4-Trifluoromethylbenzaldehyde 
• 455-13-0 4-Iodobenzotrifluoride 
• 6140-17-6 4-methylbenzotrifluoride 
• 349-95-1 4-(trifluoromethyl)benzylic alcohol 
• 199166-26-2 (±)-1,2-bis(4-(trifluoromethyl)phenyl)ethane-1,2-diol 
• 119757-51-6 1,2-bis(4-(trifluoromethyl)phenyl)ethyne 
• 59417-06-0 1,4-dimethyl-2,3-dioxopiperazine 

Downstream Products

• 1034306-99-4 C₃₄H₂₂F₆N₂ 
• 1393377-88-2 C₃₁H₁₆Br₂F₆O 
• 1398565-76-8 4-oxo-2-(4-(trifluoromethyl)benzoyl)-4-(4-(trifluoromethyl)phenyl)butanenitrile 
• 1158741-25-3 2,3,7,8-tetra(4′-trifluoromethylphenyl)pyrazino[2,3-g]quinoxaline 

Relevant articles and documents

Fused-ring acceptors based on quinoxaline unit for highly efficient single-junction organic solar cells with low charge recombination

Two non-fullerene small molecule acceptors (TFQ-F and TFQ-Cl) based on quinoxaline unit were designed and synthesized for efficient organic solar cells (OSCs). These two acceptors showed intense absorption up to 900 nm and high thermal stabilities with decomposition temperatures over 360 °C due to their fused-ring skeletons. TFQ-F and TFQ-Cl are the A-D-A′-D-A type acceptors (A/A′ for acceptor unit and D for donor unit). TFQ-F and TFQ-Cl have the same D-A′-D fragment, which was flanked with different ending groups. The effect of different ending groups on their photophysical properties, electrochemical behaviors, micro-structures and charge recombination properties of active layers, and device performance were investigated systematically. PM6 with the complementary absorption to the two acceptors was used as the donor material. The pristine PM6:TFQ-F blend films displayed the optimal morphologies as revealed by AFM and TEM measurement. Organic solar cells based on PM6:TFQ-Cl blend film showed high JSC of 25.19 mA/cm2 and PCE of 13.2%. The Voc, JSC and PCE for PM6:TFQ-F film based device were 0.857 V, 23.70 mA/cm2 and 13.51%, respectively. The dependence of VOC/JSC on various light intensities indicated that PM6:TFQ-F/Cl based device had low charge recombination.

Catalyst-Free and Transition-Metal-Free Approach to 1,2-Diketones via Aerobic Alkyne Oxidation

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Tetrasubstituted carbon containing two different halogen substituents was constructed in a single-step operation by utilizing the carbene-like reactivity of dioxaphospholene through the tandem reaction of electrophilic and nucleophilic halogenating reagents. It was crucial to devise non-dealkylatable phosphoramidite, which enabled the efficient formation of geminal chlorofluorides from various 1,2-diketones with (PhSO2)2NF and n-Bu4NCl. In addition, selective functionalization of the chlorine substituent was demonstrated, and the absence of halogen scrambling was confirmed.

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The Cu-catalyzed novel aerobic oxidative esterification reaction of 1,3-diones for the synthesis of α-ketoesters has been developed. This method combines C-C σ-bond cleavage, dioxygen activation and oxidative C-H bond functionalization, as well as provides a practical, neutral, and mild synthetic approach to α-ketoesters which are important units in many biologically active compounds and useful precursors in a variety of functional group transformations. A plausible radical process is proposed on the basis of mechanistic studies.

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