1-Propene, 1,1,2,3,3,3-hexafluoro

EINECS 204-127-4 Hexafluoropropene 1,1,2,3,3,3-Hexafluoro-1-propene Hexafiuoropropyiene HSDB 5582 Perfluoro-1-propene Perfluoropropene Perfluoro-propylene Propene, hexafluoro- 1-Propene, 1,1,2,3,3,3-hexafluoro- R1216 UN1858, Gas mp = -156,5 bp = -29,6" d- " 1,583. 

Synonyms 1,1,2,3,3,3-Hexafluoro-1 -propene, oxidized, polymerized 1-Propene, 1,1,2,3,3,3-hexafluoro-, oxidized, polymerized Classification Fluorine-based polymer Formula CF3(OCF3CFCF2)x(OCF2)yOCF3 Toxicology TSCA listed Uses Lubricant, emollient in cosmetics Trade Name Synonyms Fomblin HC/01 [Solvay Solexi s http //www.solvaysolexis. com] Fomblin HC/02 [Solvay Solexis http //www.solvaysolexis. com], Fom bli n HC/03 [Soivay Solexis http //www.solvaysolexis. com] Fom bli n HC/04 [Soivay Soiexis http //www.solvaysolexis.com]-, Fomblin HC/25 [Soivay Soiexis http //www.solvaysolexis. com]... 

Propene, 1,3-dichloro-, (Z)- Propene, 1,3-dichloro-, (Z)-. See cis-1,3-Dichloro-1-propene 1-Propene, 1,1,2,3,3,3-hexafluoro-, oxidized, polymerized. See Perfluoropolymethyl isopropyl ether... 

CAS name - 1-propene, 1,1,2,3,3,3-hexafluoro-, polymer with 1,1,2,2-tetrafluoroethene ... 

Selective formation of 2,2,3,3,3-pentafluoropropan-l-ol (1) is achieved using 80% aqueous hydrofluoric acid or hydrogen fluoride/sulfuric acid mixtures.210 Furthermore, hexafluoro-propene reacts selectively under such modified conditions to give 2,3.3,3-tctrafluoro-2-(tri-fluoromethyl)propan-1-ol (2).210 Symmetrical fluoro-containing ethers 3 are obtained by reaction of 1,1-difluoro- or 1,1-dichloroethene, respectively, with 15% paraformaldehyde in hydrogen fluoride (1-chloroethene reacts analogously).204,21 1,212... 

According to this literature survey, most investigations have been performed photochemically and in most cases, the monoadduct is composed of two isomers, the ratio of which depends upon the electrophilicity of the telogen radical. In the case of fluoroalkyl iodides, such an olefin exhibits the same reactivity towards these telogens, whatever their structure. In addition, trifluoroethylene seems less reactive than vinylidene fluoride but more reactive than hexafluoro-propene. 

Under similar experimental conditions (SIFT at room temperature), however, F adds to the C—C double bond of perfluoroalkenes such as tetrafluoroethylene and hexafluo-ropropene, which are industrially important monomers290. In the case of hexafluoro-propene a second addition step is also observed (Scheme 43). These reactions are believed to involve covalent addition rather than cluster formation for a number of reasons. First, ab initio calculations show that QF5 and C3Ff are stable ions and that the chemically bonded species 132 is more stable than the 7r-complex structure 133291. Second, these reactions... 

A somewhat more promising variation was performed by Ishikawa using hexafluoro-propene instead of chlorotrifluoroetheiie to give 2 and 3 as a mixture. When the reaction was performed under pressure, the ratio of 2 to 3 was 3 1 and the isolated yield was 72%. Under atmospheric pressure, the mixture of 2 and 3 was obtained in a ratio of 1 1 and a total yield of 89%. ... 

Reaction of the 1,3-dithiolane derived from propiophenone with the reagent hexafluoro-propene-diethylamine and 1,3-dibromo-5.5-dimcthylhydantoin (DBH) yields the vinylic fluoride instead of the expected gem-difluoroalkane (see Section 1.1.7.2.). "... 

The most convenient route to lluorinatcd epoxides is the direct epoxidation of alkenes. Since first reports of a general method using alkaline hydrogen peroxide at low temperature,- several alternative synthetic approache.s have been developed. Molecular oxygen under free-radical conditions has been used to oxidize alkenes such as tetrafluoroethene or hexafluoro-propene however, internal epoxides are formed most conveniently using hypochlorites. The products, e. g. oxirane 14 from alkene 13, are usually obtained in high... 

Octafluoropropane (8) may be prepared in excellent yield by fluorination of hexafluoro-propene.75-76... 

The / -phosphane 1, formed in the reaction of triphenylphosphane with hexafluoro-propene, reacts further with hexafluoroacetone in the presence of the fluoride ion. affording triphenylphosphane oxide and perfluorO(2-methylpcnt-2-ene) (2). Formation of fluoro-/5-phos-phancs underlies the method for the reduction of perfluoroalkenes which involves the reaction of an alkene with tributylphosphane and subsequent hydrolysis of the //-phosphane formed.176... 

Photochemical decomposition of diazo(trimethylsilyl)methane (1) in the presence of alkenes has not been thoroughly investigated (see Houben-Weyl Vol. E19b, p 1415). The available experimental data [trimethylsilylcyclopropane (17% yield) and la,2a,3j8-2,3-dimethyl-l-trimethylsilylcyclopropane (23% yield)] indicate that cyclopropanation occurs only in low yield with ethene and ( )-but-2-ene. In both cases the formal carbene dimer is the main product. In reactions with other alkenes, such as 2,3-dimethylbut-2-ene, tetrafluoroethene or hexafluoro-propene, no cyclopropanes could be detected.The transition-metal-catalyzed decomposition of diazo(trimethylsilyl)methane (1) has been applied to the synthesis of many different silicon-substituted cyclopropanes (see Table 3 and Houben-Weyl Vol.E19b, p 1415) 3.20a,b,2i.25 ( iQp. per(I) chloride has been most commonly used for carbene transfer to ethyl-substituted alkenes, cycloalkenes, styrene, and related arylalkenes. For the cyclopropanation of acyl-substituted alkenes, palladium(II) chloride is the catalyst of choice, while palladium(II) acetate was less efficient, and copper(I) chloride, copper(II) sulfate and rhodium(II) acetate dimer were totally unproductive. The cyclopropanation of ( )-but-2-ene represents a unique... 

TETRAFLUOROETHYLENE or 1,1,2,2-TETRAFLUOROETHYLENE (116-14-3) F2C=CF2 Highly reactive, thermally unstable, flammable gas (flash point <32°F/<0°C). Explodes underpressure. Able to form unstable peroxides in air. If inhibitor (usually limolene) is not present in adequate concentrations, explosive polymerization may occur above2025 mm Hg/2.66 bars at normal tenqjerature. Inhibited monomer will explode on contact with iodine pentafluoride and other substances, or in elevated temperatures. Violent reaction with chloro-peroxytrifluoromethane, difluoro-methylene dihypofluorite dioxygen difluoride, halogens, oxidizers, oxygen, sulfur trioxide, triboron pentafluoride. Incompatible with ethylene, hexafluoro-propene forms an explosive peroxide. Normal gases date containers when opened and discard after 12 months. 

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