Abstract: A method of producing a mixture of fluorine-containing (meth)acrylate esters, the method including: (A) a telomerization step of obtaining the mixture of the fluoroalkyl iodide telomers; (B) an ethylene addition step of adding ethylene to the mixture of the fluoroalkyl iodide telomers obtained in the step (A) to give a mixture of ethylene adducts; and (C) an esterification step of reacting the mixture of the ethylene adducts obtained in the step (B) with a (meth)acrylate compound to obtain fluorine-containing (meth)acrylate esters.

Abstract: A mixture of fluoroalkyl iodide telomers represented by the formula: Rf(CF2CF2)nI wherein Rf represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10, with the polymerization degree n equal to or more than k that is an integer of 3 or more, is obtained by reacting a fluoroalkyl iodide with tetrafluoroethylene in a first reactor followed by fractionating a first reaction mixture which contains fluoroalkyl iodide telomers of low polymerization degree, as well as by reacting the telomer with n of (k?1) separated from the first reaction mixture with tetrafluoroethylene in the second reactor.

Abstract: A mixture of fluoroalkyl iodide telomers represented by the formula: Rf(CF2CF2)nI wherein Rf represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10, with the polymerization degree n equal to or more than k that is an integer of 3 or more, is obtained by reacting a fluoroalkyl iodide with tetrafluoroethylene in a first reactor followed by fractionating a first reaction mixture which contains fluoroalkyl iodide telomers of low polymerization degree, as well as by reacting the telomer with n of (k?1) separated from the first reaction mixture with tetrafluoroethylene in the second reactor.

Abstract: A mixture of fluoroalkyl iodide telomers represented by the formula: Rf(CF2CF2)nI wherein Rf represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10, with the polymerization degree n equal to or more than k that is an integer of 3 or more, is obtained by reacting a fluoroalkyl iodide with tetrafluoroethylene in a first reactor followed by fractionating a first reaction mixture which contains fluoroalkyl iodide telomers of low polymerization degree, as well as by reacting the telomer with n of (k−1) separated from the first reaction mixture with tetrafluoroethylene in the second reactor.

Abstract: According to the method for producing difluoromethane and 1,1,1,2-tetrafluoroethane, having the steps of:(1) reacting methylene chloride and 1,1,2-trichloroethylene with hydrogen fluoride in a vapor phase In the presence of a fluorinating catalyst and 1,1,1,2-tetrafluoroethane in a first reactor; and(2) reacting 1,1,1-trifluorochloroethane with hydrogen fluoride in a vapor phase in the presence of a fluorinating catalyst in a second reactor, and supplying the reaction mixture from the second reactor to the first reactor, HFC-32 can be obtained in high conversion and high selectivity by fluorinating HCC-30 using commonly a large (excess) amount of HF which is required for producing HFC-134a.

Abstract: A fluoroalcohol of the formulaRf(CH.sub.2 CH.sub.2 OH)n (1)is prepared by the following three kinds of processes:(a) by contacting a betaine compound with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2)to obtain an intermediate compound and subjecting the intermediate compound to hydrolysis,(b) by contacting a betaine compound and water in the presence of an organic solvent with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2), or(c) by contacting a betaine type surfactant and water with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2),wherein Rf is C.sub.2.about.13 fluoroalkyl or C.sub.2.about.13 fluoroalkylene group, X is iodine or bromine, n is 1 when Rf is fluoroalkyl group and n is 2 when Rf is fluoroalkylene group.

Abstract: A novel 5-fluorouridine derivative of the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.10 aliphatic carbonyl group, R.sup.2 is a fluorine atom or a C.sub.1 -C.sub.3 aliphatic carbonyloxy group, and x is a halogen atom such as a fluorine, chlorine, bromine and iodine atom, which is useful as an intermediate in the preparation of a 5-fluoro-2'-deoxyuridine derivative which is useful as an anticancer agent.