- METHODS OF MAKING HALOGENATED PARTIALLY FLUORINATED COMPOUNDS
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Described herein is method of making a halogenated partially fluorinated compound, comprising: (a) providing a compound having the following structure of formula (I): Rf-CF=CXY wherein X and Y are independently selected from F and C1; wherein Rf is a fluorinated monovalent group comprising 1 to 10 carbon atoms; (b) contacting the compound with at least one of (i) an iodine or bromine containing salt in the presence of an acid; and (ii) aqueous solution of HZ wherein Z is selected from I and Br to form the halogenated partially fluorinated compound of the formula (II): R'f-CFH-CXYZ wherein X and Y are independently selected from F and C1; Z is selected from I and Br; and R'f is a fluorinated monovalent group comprising 1 to 10 carbon atoms.
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Paragraph 0059-0060
(2016/07/27)
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- Perfluoro allyl fluorosulfate (FAFS): A versatile building block for new fluoroallylic compounds
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In this study we will present and discuss both the synthesis of CF 2=CFCF2OSO2F (perfluoroallyl fluorosulfate, FAFS), focusing in particular on the important role of C3F 6/SO3 ratio, reaction temperature and boron catalyst/SO3 ratio on FAFS' yield and selectivity, as well as a wide variety of ionic and radical reactions possible with FAFS. We focused our attention on reactions of FAFS with aliphatic and aromatic alcohols, acyl halides, halides, H2O2, ketones and radicals whose synthesis and reaction mechanisms will be presented and discussed. Particular attention will be devoted to the novel diallyl-fluoroalkyl peroxide obtained. Factors such as pKa and Lowry and Pearson's Hard/Soft Acid-Base Theory which determine the selectivity between Addition/Elimination vs. Nucleophilic Substitution reaction mechanisms on FAFS will also be presented and discussed.
- Wlassics, Ivan,Tortelli, Vito,Carella, Serena,Monzani, Cristiano,Marchionni, Giuseppe
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experimental part
p. 6512 - 6540
(2011/10/13)
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- A new route to polyfluorinated trifluoromethanesulfonates. Synthesis of perfluoroallyl and perfluorobenzyl triflates
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Polyfluoroalkyl trifluoromethanesulfonates (triflates) can be prepared in good to excellent yields by the reaction of halofluoroalkanes such as CFC-11, CFC-113 and CFC-112 with boron triflate at 20-25 deg C.Hexafluoropropene (HFP) is more active and react
- Petrov, V. A.
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- Perfluoroallyl Fluorosulphonate
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Perfluoroallyl fluorosulphonate, procured via treatment of perfluoropropene with stabilized sulphur trioxide ('Sulfan'), reacts with potassium iodide, potassium bromide, sodium methoxide, and phenylmagnesium bromide to yield the corresponding perfluoroallyl derivatives CF2=CFCF2X, where X=I, Br, OMe, and Ph respectively.
- Banks, Ronald E.,Birchall, J. Michael,Haszeldine, Robert N.,Nicholson, William J.
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p. 133 - 134
(2007/10/02)
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