公开(公告)号：GB2262284A

公开(公告)日：1993-06-16

申请号：GB9225936

申请日：1992-12-11

Applicant: HOECHST AG

Inventor： STELZER OTHMAR ,  LANGHANS KLAUS PETER ,  WEFERLING NORBERT

IPC: C07F9/50 ,  C07F9/58

Abstract: 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, arylsulfonic acid or n-butyl group, are prepared by reading 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 abovememtioned 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 DEG C, at least 1 mol of potassium hydroxide being used per mol of halogen compound.

公开(公告)号：GB2262284B

公开(公告)日：1995-05-31

申请号：GB9225936

申请日：1992-12-11

Applicant: HOECHST AG

Inventor： STELZER OTHMAR ,  LANGHANS KLAUS PETER ,  WEFERLING NORBERT

IPC: C07F9/50 ,  C07F9/58

Abstract: 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 DEG C., at least 1 mol of potassium hydroxide being used per mole of halogen compound.

公开(公告)号：DD273637A5

公开(公告)日：1989-11-22

申请号：DD31987788

申请日：1988-09-16

Applicant: HOECHST AG

Inventor： STELZER OTHMAR ,  LANGHANS KLAUS P ,  SVARA JUERGEN ,  WEFERLING NORBERT

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

公开(公告)号：DD273636A5

公开(公告)日：1989-11-22

申请号：DD31986788

申请日：1988-09-16

Applicant: HOECHST AG

Inventor： STELZER OTHMAR ,  LANGHANS KLAUS P ,  SVARA JUERGEN ,  WEFERLING NORBERT

IPC: C07F9/50

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.

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.

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.