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    12.
    发明专利
    未知

    公开(公告)号：DD263993A5

    公开(公告)日：1989-01-18

    申请号：DD30638087

    申请日：1987-08-26

    Applicant: HOECHST AG

    Inventor： WEFERLING NORBERT ,  ELSNER GEORG ,  STEPHAN HANS-WERNER ,  FRORATH FRIEDRICH-KARL

    IPC: C07F9/50

    Abstract: Tertiary alkylphosphines of the general formula R3P, in which R stands for identical or different, linear, unsubstituted alkyl groups having 3 to 20 carbon atoms, with the proviso however that one of the alkyl groups may be a secondary butyl group, are made by reacting hydrogen phosphide PH3 with an appropriate alkene or alkenes in stoichiometric excess, if desired, at elevated temperature and under increased pressure in contact with a radical-yielding agent. 2,2'-azobis-(2-methylbutyronitrile) is used as the radical-yielding agent in the absence of whatever alien solvent.

    SECONDARY AND TERTIARY PHOSPHINES AND PROCESSES FOR THEIR PREPARATION
    17.
    发明专利
    SECONDARY AND TERTIARY PHOSPHINES AND PROCESSES FOR THEIR PREPARATION 未知

    公开(公告)号：CA2127816A1

    公开(公告)日：1995-02-01

    申请号：CA2127816

    申请日：1994-07-12

    Applicant: HOECHST AG

    Inventor： STELZER OTHMAR ,  HERD OLIVER ,  WEFERLING NORBERT

    IPC: C07F9/50 ,  C07F9/58

    Abstract: Secondary and tertiary phosphines and processes for their preparation The invention relates to secondary and tertiary phosphines of the formula in which R is hydrogen, an aryl or benzyl group or a straight-chain or branched alkyl group, n is 1 or 2 and M is potassium or sodium. These phosphines are prepared by reacting either alkali metal salts of fluorobenzene-2,4-disulfonic acid with phosphine or with primary or secondary phosphines, or secondary phosphines of the type HP¢C6H3-2,4-(SO3M)2!2 with a compound RX in which R is an alkyl, aryl or benzyl group and X is a halogen, in an aprotic solvent in the presence of at least stoichiometric quantities of a solid, powdered alkali metal hydroxide at temperatures of from 0 to 100.degree.C.

    PROCESS FOR THE PREPARATION OF PHOSPHANES
    18.
    发明专利
    PROCESS FOR THE PREPARATION OF PHOSPHANES 未知

    公开(公告)号：CA1324393C

    公开(公告)日：1993-11-16

    申请号：CA576257

    申请日：1988-09-01

    Applicant: HOECHST AG

    Inventor： STELZER OTHMAR ,  LANGHANS KLAUS-PETER ,  SVARA JUERGEN ,  WEFERLING NORBERT

    IPC: C07B61/00 ,  B01J31/02 ,  B01J31/24 ,  C07C45/50 ,  C07F9/50

    Abstract: The invention relates to a process for the preparation of phosphanes of the formulae RnPH3-n (I) or (II) in which R represents a straight-chain or branched alkyl group having 1 to 24 carbon atoms or a cycloalkyl, benzyl or allyl group, n is 1 or 2, m corresponds to 2, 3 or 4 and A and B are identical or different and have either the meaning of R, hydrogen or a phenyl group, by reacting phosphene in the presence of a catalyst with reagents of the formula R-hal or hal(C(A)(B))mhal, in which R, A, B and m have the meanings mentioned and hal stands for chlorine or bromine, by using as a catalyst a tetraalkylammonium or tetraalkylphosphonium salt and carrying out the reaction in the presence of an aqueous alkali metal hydroxide solution at temperatures between -20 and 200 .degree.C and at a positive pressure of 0 to 10 bar, in which process for each mole of hal at least 1 mole of alkali metal hydroxide is used.

    PROCESS FOR THE PREPARATION OF TERTIARY PHOSPHINES
    19.
    发明专利
    PROCESS FOR THE PREPARATION OF TERTIARY PHOSPHINES 未知

    公开(公告)号：CA2084738A1

    公开(公告)日：1993-06-15

    申请号：CA2084738

    申请日：1992-12-07

    Applicant: HOECHST AG

    Inventor： STELZER OTHMAR ,  LANGHANS KLAUS-PETER ,  WEFERLING NORBERT

    IPC: C07F9/50 ,  C07F9/58 ,  C07F9/547

    Abstract: HOE 91/H 031 Process for the preparation of tertiary phosphines A process is specified for the preparation of tertiary phosphines of the formula R'PR2 or R2P-¢CH2!3-PR2 in which R is an aryl, pyridyl or arylsulfonic acid group and R' is an aryl, pyridyl, arylsulfonic acid or n-butyl group, which comprises reacting phosphines of the formula HnPR"3-n or H2P-¢CH2!3-PH2 in which R" is hydrogen or an n-butyl, aryl or pyridyl group and n is 1 or 2 with a halogen compound of the formula X-R, in which R has the abovementioned meaning and X is fluorine, chlorine or bromine, in the presence of powdered potassium hydroxide and dimethyl sulfoxide and/or dimethoxyethane at temperatures between 0 and 100.degree.C, at least 1 mol of potassium hydroxide being used per mole of halogen compound.

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