PROCESS FOR THE PREPARATION OF TERTIARY ALCOHOLS CONTAINING FLUORINE

    公开(公告)号:CA2049771A1

    公开(公告)日:1992-02-25

    申请号:CA2049771

    申请日:1991-08-23

    Applicant: HOECHST AG

    Inventor: KNAUP WOLFGANG

    Abstract: - 1 - HOE 90/F 910 of the disclosure Process for the preparation of tertiary alcohols containing fluorine In the process described tertiary fluoroalcohols of the following formula in which Rf is a perfluoroalkyl radical having 4 to 20 carbon atoms, R1 is CH3 and R2 is CH3 or C2H5, are prepared by reacting perfluoroalkylethylenes of the formula Rf-CH=CH2 in which Rf has the meaning indicated, with excess isopropanol or excess sec.-butanol in the presence of free-radical initiators.

    PROCESS FOR THE PREPARATION OF PRIMARY AND SECONDARY FLUORINE-CONTAINING ALCOHOLS

    公开(公告)号:CA2074619A1

    公开(公告)日:1993-01-27

    申请号:CA2074619

    申请日:1992-07-24

    Applicant: HOECHST AG

    Inventor: KNAUP WOLFGANG

    Abstract: HOE 91/F 908 of the disclosure Process for the preparation of primary and secondary fluorine-containing alcohols A process is described for the preparation of fluoroalcohols of the formula below Rf-CH2-CH2-?H-OH in which Rf is a perfluoroalkyl radical having 1 to 20 carbon atoms and R is hydrogen or an alkyl radical having 1 to 5 carbon atoms, by reaction of a perfluoroalkylethylene, Rf-CH=CH2, and an n-C1 to C6-alkanol in the presence of a free radical initiator, the perfluoroalkylethylene, the alkanol and the free radical initiator being used in the molar ratio of 1 to 20-50 to 0.002-0.2. In the novel process, in addition, the reaction is carried out in a specific manner and under specific reaction conditions. The fluoroalcohols given are obtained in high yield.

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