87721-33-3

Basic information

• Product Name: Thiophene, 2,5-bis(trifluoromethyl)-
• CAS NO: 87721-33-3
• Molecular Formula: C6H2F6S
• Molecular Weight: 220.138
• Mol File: 87721-33-3.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 105.8±35.0 °C(Predicted)
• Density: 1.508±0.06 g/cm3(Predicted)
• CAS DataBase Reference: Thiophene, 2,5-bis(trifluoromethyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Thiophene, 2,5-bis(trifluoromethyl)-(87721-33-3)
• EPA Substance Registry System: Thiophene, 2,5-bis(trifluoromethyl)-(87721-33-3)

Safety Data

• Hazardous Substances Data: 87721-33-3(Hazardous Substances Data)

Upstream product

• 188290-36-0 thiophene 
• 421-83-0 trifluoromethane sulfonyl chloride 
• 773-61-5 2,3-bis(trifluoromethyl)thiophene 
• 661-54-1 3,3,3-trifluoroprop-1-yne 
• 4282-31-9 Thiophene-2,5-dicarboxylic acid 

Relevant articles and documents

Air-Sensitive Photoredox Catalysis Performed under Aerobic Conditions in Gel Networks

In this work, we demonstrate that useful C-C bond-forming photoredox catalysis can be performed in air using easily prepared gel networks as reaction media to give similar results as are obtained under inert atmosphere conditions. These reactions are completely inhibited in homogeneous solution in air. However, the supramolecular fibrillar gel networks confine the reactants and block oxygen diffusion, allowing air-sensitive catalytic activity under ambient conditions. We investigate the mechanism of this remarkable protection, focusing on the boundary effect in the self-assembled supramolecular gels that enhances the rates of productive reactions over diffusion-controlled quenching of excited states. Our observations suggest the occurrence of triplet-sensitized chemical reactions in the gel networks within the compartmentalized solvent pools held between the nanofibers. The combination of enhanced viscosity and added interfaces in supramolecular gel media seems to be a key factor in facilitating the reactions under aerobic conditions.

SYNTHESIS AND POLYMERISATION OF ETHYNYLTHIOPHENES AND ETHYNYLFURANS CONTAINING TRIFLUORMETHYL GROUPS

Fluorination of thiophenedicarboxylic acid with sulfur tetrafluoride in the presence of anhydrous hydrogen fluoride provided mono and bis(trifluoromethyl)thiophenes in moderate yields.Ethynylthiophenes and ethynylfurans containing trifluoromethyl groups were prepared via 2,2-dichloro-1-fluorovinyl compounds.In polymerizations using transitions metal catalysts, 3-ethynylthiophenes gave polymers in high yields, which were soluble in THF and/or fluorocompounds, while 2-ethynylthiophenes polymerized in low yields.In γ-ray induced polymerization, only 2,5-bis(trifluoromethyl)-3-ethynylthiophene afforded the corresponding polymers.Thermal decomposition temperatures of polymers obtained increased by introduction of the trifluoromethyl groups as well as the methyl groups.

PHOTOISOMERIZATION OF TRIFLUOROMETHYLATED THIOPHENES

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