Abstract: An object of the present invention is to provide a production method that makes it possible to produce 1,1-dibromo-1-fluoroethane easily and sustainably. The present invention provides a method for producing 1,1-dibromo-1-fluoroethane, the method comprising step A of reacting 1,1-dibromoethylene with hydrogen fluoride to obtain 1,1-dibromo-1-fluoroethane.

Abstract: The object of the present invention is to provide a process for producing ?-fluoroacrylic acid ester at a high starting material conversion, high selectivity, and high yield. The present invention provides a process for producing the compound represented by the formula (1) wherein R represents alkyl optionally substituted with one or more fluorine atoms, the process comprising step A of reacting a compound represented by the formula (2) wherein X represents a bromine atom or a chlorine atom with an alcohol represented by the formula (3) wherein the symbol is as defined above, and carbon monoxide in the presence of a transition metal catalyst and a base to thereby obtain the compound represented by the formula (1).

Abstract: Object: An object of the present invention is to provide a method for producing, with a high yield, a fluorinated organic compound, the fluorinated organic compound having not been produced with a sufficient yield by a conventional method for producing a fluorinated organic compound using a fluorinating agent containing IF5-pyridine-HF alone. Another object of the present invention is to provide a fluorinating reagent. Means for achieving the object: A method for producing a fluorinated organic compound comprising step A of fluorinating an organic compound by bringing the organic compound into contact with (1) IF5-pyridine-HF and (2) at least one additive selected from the group consisting of amine hydrogen fluorides, XaF (wherein Xa represents hydrogen, potassium, sodium, or lithium), oxidizers, and reducing agents.

Abstract: The object of the present invention is to provide a process for producing ?-fluoroacrylic acid ester at a high starting material conversion, high selectivity, and high yield. The present invention provides a process for producing the compound represented by the formula (1) wherein R represents alkyl optionally substituted with one or more fluorine atoms, the process comprising step A of reacting a compound represented by the formula (2) wherein X represents a bromine atom or a chlorine atom with an alcohol represented by the formula (3) wherein the symbol is as defined above, and carbon monoxide in the presence of a transition metal catalyst and a base to thereby obtain the compound represented by the formula (1).

Abstract: The present invention provides novel fluorosulfonic acids and salts thereof having greater stability and higher acidity than conventional fluorosulfonic acids; and synthetic intermediates thereof. The invention also provides processes for producing novel fluorosulfonic acids from which various derivatives can be easily synthesized; and uses of these fluorosulfonic acids. Specifically, the invention provides a compound represented by formula (1): R—S(?O)n—CF2—SO3H??(1) wherein R is a group bound to an adjacent sulfur atom through a carbon atom, examples of R being an optionally substituted alkyl group, an optionally substituted haloalkyl group, an optionally substituted alkenyl group, an optionally substituted haloalkenyl group, an optionally substituted alkynyl group, an optionally substituted haloalkynyl group, an optionally substituted cycloalkyl group, etc.; and n is 1 or 2. The invention also provides salts of such a compound, etc.

Abstract: The present invention provides novel fluorosulfonic acids and salts thereof having greater stability and higher acidity than conventional fluorosulfonic acids; and synthetic intermediates thereof. The invention also provides processes for producing novel fluorosulfonic acids from which various derivatives can be easily synthesized; and uses of these fluorosulfonic acids. Specifically, the invention provides a compound represented by formula (1): R—S(?O)n—CF2—SO3H??(1) wherein R is a group bound to an adjacent sulfur atom through a carbon atom, examples of R being an optionally substituted alkyl group, an optionally substituted haloalkyl group, an optionally substituted alkenyl group, an optionally substituted haloalkenyl group, an optionally substituted alkynyl group, an optionally substituted haloalkynyl group, an optionally substituted cycloalkyl group, etc.; and n is 1 or 2. The invention also provides salts of such a compound, etc.

Abstract: O-(perfluoroalkyl)dibenzofuranium salt derivatives represented by the following general formula (1), (wherein Rf in said general formula (1) is a C1-10 perfluoroalkyl group and X− is a conjugate base of a Brönsted acid). Intermediates for preparation of the derivatives, a preparation method thereof, perfluoroalkylating agents comprising the said derivatives and the said preparation intermediates, and a perfluoroalkylating method.

Abstract: A polymer containing a recurring unit of a conjugated N-fluoropyridinium salt and an active material for a positive electrode, an electrolyte, a battery material for the positive electrode and a battery which use such a polymer. That polymer provides a battery material and a primary battery or a secondary battery which have high electromotive force, high energy density, high environmental acceptability, a low internal resistance in charging and discharging and strong recoverability of the electromotive force, and can be useful as a fluorinating agent.

Abstract: (Haloalkyl)dibenzooniumsulfonate represented by the following general formula (I): ##STR1## By using this compound as the haloalkylating agent, haloalkylated organic compounds being non-water-soluble as the objective product can very easily be separated in the post-treatment process. This haloalkylating agent can be produced from cheap materials on an industrial basis because those materials for compounding are industrially easily available or can easily be synthesized industrially.

Abstract: A (perfluoroalkyl)dibenzonium salt represented by the following general formula ##STR1## wherein R.sub.f represents a perfluoroalkyl group having 1 to 10 carbon atoms, A represents a sulfur of selenium atom, R.sup.1 and R.sup.2, independently from each other, represent a hydrogen atom or a nitro group, X.sup..crclbar. represents a conjugated base of Bronsted acid, and n is 0 or 1.The said compound is useful as a reagent for introducing a perfluoroalkyl group.