113939-45-0

Basic information

• Product Name: Benzene, 1-bromo-4-(2-bromo-1,1,2,2-tetrafluoroethoxy)-
• CAS NO: 113939-45-0
• Molecular Formula: C8H4Br2F4O
• Molecular Weight: 351.921
• Mol File: 113939-45-0.mol
• Article Data: 9

Chemical Properties

• CAS DataBase Reference: Benzene, 1-bromo-4-(2-bromo-1,1,2,2-tetrafluoroethoxy)-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1-bromo-4-(2-bromo-1,1,2,2-tetrafluoroethoxy)-(113939-45-0)
• EPA Substance Registry System: Benzene, 1-bromo-4-(2-bromo-1,1,2,2-tetrafluoroethoxy)-(113939-45-0)

Safety Data

• Hazardous Substances Data: 113939-45-0(Hazardous Substances Data)

Upstream product

• 106-41-2 4-bromo-phenol 
• 124-73-2 1,2-dibromo-1,1,2,2-tetrafluoroethane 

Downstream Products

• 68834-05-9 1-bromo-4-(1,1,2,2-tetrafluoroethoxy)benzene 
• 134151-77-2 1-bromo-4-(trifluorovinyloxy)benzene 
• 91047-49-3 N-(α,α,β,β-tetrafluoroethyl)imidazole 
• 865485-85-4 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-yl)-phenyl trifluorovinyl ether 

Relevant articles and documents

Fluorinated aromatic polyether ionomers containing perfluorocyclobutyl as cross-link groups for fuel cell applications

The cross-linkable copolymers (SHQx-TFVys) with varying degrees of sulfonation (DS) from 70 to 95% were prepared from potassium-2,5- dihydroxybenzenesulfonate (SHQ), decafluorobiphenyl (DFBP), and 4-(trifluorovinyloxy)-biphenyl-2,5-diol (TFVOH) as a cross-linkable moiety. To develop a highly stable polymer electrolyte membrane (PEM) for application in polymer electrolyte fuel cells (PEFC)s, cross-linked membranes were prepared by chemical cross-linking. The cross-linked membranes were synthesized by varying the amount of TFVOH (5-30 mol %) in order to achieve desirable PEM properties. The structures of the cross-linkable monomer and polymers were investigated by 1H and 19F NMR and FT-IR spectra. The cross-linked membranes exhibited good glass transition temperature and thermal stability up to 239-271 °C and 290-312 °C, respectively. The crosslinked membranes (DS range 80-95%) exhibited higher proton conductivity(0.098-0.151 S/cm) than Nafion 212 (0.092 S/cm). Moreover, all membranes possessed lower methanol permeability (13-132 × 10-8 cm2/s) compared with Nafion 212 (163 ×10-8 cm2/s) under the same measurement conditions. The H2/O2 single cell performance tests of the cross-linked membranes and Nafion 212 were performed. The CSHQ90-TFV10 exhibited the higher maximum power density (1.053 W/cm2) than that of Nafion 212 (0.844 W/cm2).

Unexpected reactivity of cyclic perfluorinated iodanes with electrophiles

We have found that cyclic perfluorinated iodanes react with electrophiles (E+ = Br, Cl, F, I) to afford perfluorinated E-RF compounds. This reactivity is unexpected since cyclic perfluorinated iodanes are considered as electrophilic reagents that normally react with nucleophiles (e.g. Nu- = SR, OR) to afford Nu-RF products. The utility of this new transformation is demonstrated for a [18F]CF3CF2-containing compound which was prepared from [18F]XeF2 obtained from cyclotron produced [18F]fluoride.

Novel fluorinated poly(aryl ether)s derived from 1,2-bis(4-(4-fluorobenzoyl)phenoxy)-hexafluorocyclobutane

Two novel poly(aryl ether)s were prepared from 1,2-bis(4-(4-fluorobenzoyl)-phenoxy)-hexafluorocyclobutane and aromatic bisphenols by the aromatic nucleophilic substitution reaction in a polar aprotic solvent. These polymers have good thermal stability up to 341 °C with 10% weight loss in inert atmosphere and good solubility in common organic solvents such as THF, DMAc, DMF and DMSO.