| 摘要 |
1. A process for preparing fluoroalkyl-substituted alkanes or alkenes by reacting a compound of the following formula XRf Z in which Rf denotes a perfluorinated alkylene radical, which is straight-chain and has 1 to 15 carbon atoms or is branched and has 3 to 15 carbon atoms or is cyclic and has 4 to 8 carbon atoms, X denotes hydrogen, fluorine, chlorine, bromine or iodine, and Z denotes bromine or iodine, with a compound of the following formulas see diagramm : EP0142041,P7,F1 in which R1 and R2 can be identical or different and each denotes : hydrogen, fluorine, chlorine, a perfluoroalkyl radical which has 1 to 12 carbon atoms and in which a fluorine atom can be replaced by hydrogen or chlorine, an alkyl radical having 1 to 20 carbon atoms, an alkenyl radical having 2 to 20 carbon atoms, an aryl radical having 6 to 10 carbon atoms or an arylalkyl radical having 7 to 12 carbon atoms, and a substituent of the last mentioned four tyeps, can in turn be substituted by F, CI, -OH or -OR', in which R' denotes an alkyl or alkylcarboxyl radical having 1 to 5 carbon atoms, or CH-=C-R3 in which R3 denotes : a perfluoroalkyl radical of 1 to 12 carbon atoms in which a fluorine atom can be replaced by a hydrogen or chlorine atom, an alkyl radical of 1 to 20 carbon atoms, an alkenyl radical of 2 to 20 carbon atoms, an aryl radical of 6 to 10 carbon atoms or an arylalkyl radical of 7 to 12 carbon atoms and a substituent of the last mentioned four types can in turn be substituted by F, CI, -OH or -OR', in which R' denotes an alkyl or alkylcarboxyl radical of 1 to 5 carbon atoms, under heat and under atmospheric pressure or superatmospheric pressure in the presence of a metal complex catalyst, characterized by carrying out the process at 20 to 130 degrees C and using as said catalyst at least one metal complex compound which contains as the central atom a metal which, in the periodic table of the elements, has one of the atomic numbers 24 to 30, 42 to 48 or 74 to 79 and has an oxidation state of zero, +1 or +2, and contains at least one of the following ligands : carbon monoxide, trialkyl phosphite, triaryl phosphite or a compound of the formula (R)3 Q in which R denotes an alkyl, aryl or arylalkyl radical and Q denotes phosphorus, arsenic or antimony, the metal complex compounds which contain carbon monoxide as ligand and a metal which, in the periodic table of elements, has one of the atomic numbers 26 to 28, 44 to 46, and 76 to 78 are disclaimed. |
