中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

51 records (took 0.041 seconds)

    PRODUCTION OF CYANOACETIC ACID ESTER
    2.
    发明专利
    PRODUCTION OF CYANOACETIC ACID ESTER 失效

    公开(公告)号：JP2000143603A

    公开(公告)日：2000-05-26

    申请号：JP31254499

    申请日：1999-11-02

    Applicant: BASF AG

    Inventor： JULIUS MANFRED DR ,  SCHNEIDER ROLF ,  MUNDINGER KLAUS DR ,  FISCHER JAKOB

    IPC: B01J31/02 ,  C07B61/00 ,  C07C253/14 ,  C07C255/17 ,  C07C255/19

    Abstract: PROBLEM TO BE SOLVED: To produce a cyanoacetic acid ester useful as an intermediate for producing an effective substance, an active substance such as caffeine, or a photoprotective substance advantageously on an industrial scale by reacting a corresponding monochloroacetic acid ester with hydrogen cyanide in the presence of a specific base. SOLUTION: A corresponding monochloroacetic acid ester is made to react with hydrogen cyanide in the presence of a basic compound (the amount of the base is commonly 50-300 mol.% based on the monochloroacetic acid ester) selected from a group consisting of tertiary amines (e.g. trialkylamine), salts of carbonic acid (e.g. an alkali metal carbonate), salts of a carbonic acid half ester) (e.g. an alkali metal alkylcarbonic acid salt), salts of a carboxylic acid (e.g. an alkali metal carboxylate), amidines (e.g. peralkylated amidine or a bicyclic amidine), guanidines (e.g. peralkylated guanidine) and aromatic N- heterocyclic compounds (e.g. pyridine) generally at -78 deg.C to 20 deg.C under 0.05-2 MPa for 10 min to 2 hr or more.

    PHOSPHITE
    4.
    发明专利
    PHOSPHITE 未知

    公开(公告)号：DE50012997D1

    公开(公告)日：2006-07-27

    申请号：DE50012997

    申请日：2000-10-25

    Applicant: BASF AG

    Inventor： BAUMANN ROBERT ,  FISCHER JAKOB ,  JUNGKAMP TIM ,  KUNSMANN-KEITEL PASCALE ,  SIEGEL WOLFGANG

    IPC: B01J31/22 ,  C07F9/145 ,  B01J31/02 ,  B01J31/18 ,  C07B61/00 ,  C07C253/10 ,  C07C253/30 ,  C07C255/03 ,  C07C255/07 ,  C07C255/19 ,  C07F15/04

    Abstract: New phosphites (I), with alkylaryl, arylaryl and/or condensed aryl groups, have 1, 2 or 3 o-substituted and optionally 1 or 2 m- and/or p-substituted aryl groups. New phosphites of formula (I), with alkylaryl, arylaryl and/or condensed aryl groups, have 1, 2 or 3 o-substituted and optionally 1 or 2 m- and/or p-substituted aryl groups; P(O-R 1>)(O-R 2>) y(O-R 3>) z(O-R 4>) p (I) R 1>an aromatic group with a 1-18 carbon (C) alkyl, an aromatic substituent or a condensed aromatic system in the o-position to the oxygen (O) atom linking the phosphorus (P) atoms to the aromatic system; R 2>a similar aromatic group substituted in the m-position; R 3>a similar aromatic group substituted in the p-position; R 4>an aromatic group with a different substituent in the o-, m- or p-position and a hydrogen (H) atom in the o-position; x : 1 or 2; y, z, p : 0, 1 or 2; (x+y+z+p) : 3 Independent claims are also included for: (a) new transition metal complexes (II) with (I) as ligand; (b) the preparation of (I); (c) the preparation of (II); (d) the addition of hydrogen cyanide to an olefinic double bond in the presence of (II) as catalyst; and (e) the isomerization of organic nitriles in the presence of (II) as catalyst.

    PHOSPHITES
    5.
    发明专利
    PHOSPHITES 未知

    公开(公告)号：CA2389608A1

    公开(公告)日：2001-05-25

    申请号：CA2389608

    申请日：2000-10-25

    Applicant: BASF AG

    Inventor： BAUMANN ROBERT ,  SIEGEL WOLFGANG ,  FISCHER JAKOB ,  KUNSMANN-KEITEL DAGMAR PASCALE ,  JUNGKAMP TIM

    IPC: B01J31/22 ,  B01J31/02 ,  B01J31/18 ,  C07B61/00 ,  C07C253/10 ,  C07C253/30 ,  C07C255/03 ,  C07C255/07 ,  C07C255/19 ,  C07F9/145 ,  C07F15/04

    Abstract: The invention relates to phosphites of the formula (I) P (O-R1)x (O-R2)y (O- R3)z (O-R4)p where R1= an aromatic group with a C1-C18-alkyl substituent ort ho to the O atom, or an aromatic substituent ortho to the O atom, or a fused aromatic system ortho to the O atom; R2= an aromatic group with a C1-C18 alk yl substituent meta to the O atom, or an aromatic substituent meta to the O ato m, or a fused aromatic system meta to the O atom, whereby the aromatic residue ortho to the O atom has a hydrogen atom; R3 = an aromatic group with a C1-C1 8 alkyl substituent para to the O atom, or an aromatic substituent para to the O atom, whereby the aromatic group ortho to the O atom has a hydrogen atom; R4 = an aromatic group with substituents ortho, meta and para to the o atom which are different to those defined for R1, R2 and R3, whereby the aromatic group ortho to the O atom has a hydrogen atom; x = 1 or 2; y, z and p, independent of each other = 0, 1 or 2 with the proviso, that x+y+z+p =3.

    7.
    发明专利
    未知

    公开(公告)号：TR200000327T2

    公开(公告)日：2000-11-21

    申请号：TR200000327

    申请日：1998-08-04

    Applicant: BASF AG

    Inventor： FISCHER JAKOB ,  SIEGEL WOLFGANG

    IPC: B01J31/22 ,  C07B61/00 ,  C07C253/10 ,  C07C255/04 ,  C07C255/07

    Abstract: A process for preparing mixtures of monoolefinic C5 mononitriles with nonconjugated C=C and C=N bonds by catalytic hydrocyanation of 1,3-butadiene or a 1,3-butadiene-containing hydrocarbon mixture, wherein the hydrocyanation takes place in the presence of a catalyst which comprises at least one metallocene-phosphorus(III)-nickel(0) complex which comprises at least one monodentate or bidentate metallocene-phosphorus(III) ligand of the formula Ior salts and mixtures thereof.

Patent Agency Ranking