中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

28 records (took 0.021 seconds)

    PROCESS FOR PREPARING 2,2'-BIS(DIPHENYLPHOSPHINYLMETHYL)-1,1'-BINAPHTHYLS AND NEW COMPOUNDS FROM THIS CLASS OF SUBSTANCES
    13.
    发明专利
    PROCESS FOR PREPARING 2,2'-BIS(DIPHENYLPHOSPHINYLMETHYL)-1,1'-BINAPHTHYLS AND NEW COMPOUNDS FROM THIS CLASS OF SUBSTANCES 未知

    公开(公告)号：CA2145255A1

    公开(公告)日：1995-09-24

    申请号：CA2145255

    申请日：1995-03-22

    Applicant: HOECHST AG

    Inventor： KLEINER HANS-JERG ,  REGNAT DIETER ,  ROESCHERT HORST

    IPC: C07C17/14 ,  C07F9/53 ,  C07F9/50 ,  B01J19/08

    Abstract: Process for preparing2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyls and new compounds from this class of substances. The present invention relates to a process for preparing 2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyls, by reacting a reaction mixture prepared in a solvent by reaction of 2,2'-dimethyl-1,1'-binaphthyl with a brominating agent and containing 2,2'-bis(bromomethyl)-1,1'-binaphthyl and further brominated binaphthyls, if desired after removal of unreacted brominating agent, reacted brominating agent and/or solvent, with an alkyl diphenylphosphinite of the formula RO-P(Ph-(R')n)2, where R is an alkyl radical having from 1 to 5 carbon atoms, Ph is phenyl, R' is an alkyl radical having from 1 to 4 carbon atoms, CF3, fluorine, chlorine or bromine and n is 0, 1 or 2, at from 70 to 180.degree.C in the presence or absence of a further solvent. The invention further relates to compounds of the formula where R' is an alkyl radical having from 1 to 4 carbon atoms, CF3, fluorine, chlorine or bromine and n is 1 or 2.

    ARYL PHOSPHINITES
    15.
    发明专利
    ARYL PHOSPHINITES 未知

    公开(公告)号：CA2096687A1

    公开(公告)日：1993-11-22

    申请号：CA2096687

    申请日：1993-05-20

    Applicant: HOECHST AG

    Inventor： REGNAT DIETER ,  KLEINER HANS-JERG

    IPC: C07F9/46 ,  C07F9/53

    Abstract: HOE 92/F 143 Aryl phosphinites Aryl phosphinites of the formula (I) (I) can be prepared in a simple manner and in high yields by reacting 2,4-di-tert.-butylphenylphosphonous dihalides with alkyl- or arylmagnesium bromides or alkyl- or arylmagnesium chlorides. Aryl phosphinites serve for the preparation of secondary phosphine oxides which are used as starting materials for the preparation of phosphine ligands in catalyst systems.

    PHOSPHONIUM SALTS, A PROCESS FOR THE PREPARATION THEREOF AND USE THEREOF
    17.
    发明专利
    PHOSPHONIUM SALTS, A PROCESS FOR THE PREPARATION THEREOF AND USE THEREOF 未知

    公开(公告)号：CA2151227A1

    公开(公告)日：1995-12-09

    申请号：CA2151227

    申请日：1995-06-07

    Applicant: HOECHST AG

    Inventor： NAUMANN CHRISTOPH ,  REGNAT DIETER

    IPC: C07F9/6568 ,  D06M13/285

    Abstract: Phosphonium salts, a process for the preparation thereof and use thereof The present invention relates to phosphonium salts of the formula (I) ( I ), in which Ar-Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH2 group is arranged in the ortho position to the Ar-Ar bond, R is F, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms, n is an integer from 0 to 4, R1 and R2 are identical or different and, independently of each other, are an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or are a radical Ar1-(R3)m, where Ar1 is a phenyl or naphthyl radical, R3 is F, C1, CF3, SO3H, SO3Me (Me = Li, Na or K), a dialkylamino radical having 2 to 8 carbon atoms, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms and m is an integer from 0 to 5, or R1 and R2 together with the P atom form a ring having 4 to 8 members to which may be fused one or two aromatic rings or ring systems including 6 to 10 carbon atoms and X- is a monovalent anion or the equivalent of a polyvalent anion of a mineral acid, carboxylic acid, sulfonic acid or an alcohol. The invention further relates to a process for the preparation of the phosphonium salts and use thereof.

Patent Agency Ranking