中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

174 records (took 0.029 seconds)

    132.
    发明专利
    未知

    公开(公告)号：DE19734446A1

    公开(公告)日：1999-02-11

    申请号：DE19734446

    申请日：1997-08-08

    Applicant: BASF AG

    Inventor： WEGNER CHRISTOPH DR ,  PAUST JOACHIM DR ,  JOHN MICHAEL DR

    IPC: C07C403/24 ,  C07C11/21 ,  C07F9/54

    Abstract: New and known phosphonium salts are prepared by reacting an alcohol with a triarylphosphine and a sulfonic acid in a solvent. Preparation of phosphonium salts of formula (I) comprises reaction of 3,7,11-trimethyldodeca-1,4,6,10-tetraen-3-ol (II) with a triarylphosphine and a sulfonic acid of formula XH (III) in a solvent. X = Q-SO3 ; Q = CnH2n+1, Ar' or CF3; R = aryl; n = 1, 2, 3 or 4; Ar' = phenyl or toluyl Independent claims are included for: (1) compounds (I) when Q is other than Ar'; and (2) preparation of lycopine by reaction of a compound of formula (I) with 2,7-dimethyl-2,4,6- octatrienedial.

    133.
    发明专利
    未知

    公开(公告)号：DE59309150D1

    公开(公告)日：1999-01-07

    申请号：DE59309150

    申请日：1993-07-12

    Applicant: BASF AG

    Inventor： PAUST JOACHIM DR ,  KRAUSE WOLFGANG DR

    IPC: B01J31/02 ,  C07B61/00 ,  C07C41/50 ,  C07C43/303

    Abstract: An improved process for preparing E,Z-butenedial bis(dialkyl acetals) by reacting the corresponding 2,5-dialkoxy-2,5-dihydrofurans with the corresponding lower alkanols in the presence of an acid at elevated temperature entails carrying out the reaction in the presence of approximately equimolar amounts of a trialkyl orthoformate and in the presence of catalytic amounts of a strong mineral acid or of a strong organic acid.

    One-stage preparation of tetra:methyl-tri:hydroxy-hexadecane
    134.
    发明专利
    One-stage preparation of tetra:methyl-tri:hydroxy-hexadecane 未知

    公开(公告)号：DE19604723A1

    公开(公告)日：1997-08-14

    申请号：DE19604723

    申请日：1996-02-09

    Applicant: BASF AG

    Inventor： MUELLER THOMAS DR ,  PAUST JOACHIM DR

    IPC: B01J23/46 ,  C07C29/03 ,  C07C31/22

    Abstract: Preparation of 3,7,11,15-tetramethyl-1,2,3-trihydroxy-hexadecane (I) comprises the oxidation of 3,7,11,15-tetramethyl-3-hydroxy-hexadeca-1-ene (IIa) or 3,7,11,15-tetramethylhexadeca-2-ene-1-ol (IIb) in the presence of one or more organic solvents (optionally combined with water), a catalytic amount of an osmium compound (III), and a secondary oxidation agent selected from hydrogen peroxide, an alkali metal chlorate, tert.-butyl hydroperoxide, trimethylamine-N-oxide, triethylamine-N-oxide or N-methyl- morpholine-N-oxide (NMMO), at 0-100 deg C .

    135.
    发明专利
    未知

    公开(公告)号：DE59500101D1

    公开(公告)日：1997-03-13

    申请号：DE59500101

    申请日：1995-03-02

    Applicant: BASF AG

    Inventor： JOHN MICHAEL DR ,  RHEUDE UDO DR ,  PAUST JOACHIM DR ,  MEYER JOACHIM DR

    IPC: C07C29/32 ,  C07C29/40 ,  C07C35/17 ,  C07C35/18 ,  C07C43/184 ,  C07C43/188 ,  C07C45/58 ,  C07C49/337 ,  C07C49/35 ,  C07C49/537 ,  C07C49/577 ,  C07C67/293 ,  C07C69/78 ,  C07C69/96 ,  C07D303/14 ,  C07D303/16 ,  C07D303/22 ,  C07D309/12 ,  C07D407/12 ,  C07F7/18

    Abstract: Prodn. of 1,2,2-trimethyl- cyclopentylmethylketone derivs. of formula (I) comprises (A) (i) reacting a 2,2,6-tri- methyl-cyclohexane-1-one of formula (II) with a methylcarbanion of formula CH3 M (III) and converting the resulting 1,4-dihydroxy-1,2,2,6-tetramethylcyclohexane deriv. of formula (IV) into a mixt. of the corresp. cpds. (V) and (VI) by acid catalysed elimination of the tert. hydroxyl gp., or (A) (ii) the 2,2,6-trimethylcyclohexane-1-one cpd. (II) may be converted directly into the cpd. (VI) by a Wittig reaction with a triphenylmethylenephosphorane cpd. of formula (C6H5)3P=CH2 (VII); (B) converting the cpd. (VI) into the cpd. (V) by acid catalysed isomerisation of the double bond; (C) epoxidising the double bond in the cpd. (V) in the known way by reacting with peroxyacids, their salts or hydroperoxides to form the 7-oxa-bicycloÄ4.1.0Üheptane cpd. of formula (VIII) and (D) converting the cpd. (VIII) into the 1,2,2-tri- methyl-cyclopentylmethylketone cpd. (I) by reaction with Lewis acids and opt. splitting off the protective gp. from the O atom. R=H, alkyl, aryl, arylmethyl, trialkylsilyl, triarylsilyl, alkylarylsilyl, alkyloxyalkyl, tetrahydropyranyl, arylmethyloxycarbonyl, alkanoyl or benzoyl residue; M =Li, MgCl, MgBr or MgI.

    Prodn. of allyl aldehyde intermediates, esp. for polyene cpds.
    137.
    发明专利
    Prodn. of allyl aldehyde intermediates, esp. for polyene cpds. 未知

    公开(公告)号：DE4440287A1

    公开(公告)日：1996-05-15

    申请号：DE4440287

    申请日：1994-11-11

    Applicant: BASF AG

    Inventor： KRAUSE WOLFGANG DR ,  PAUST JOACHIM DR

    IPC: C07C67/29 ,  C07C67/40 ,  C07C69/025 ,  C07C69/73 ,  C07D295/24

    Abstract: Prodn. of allyl aldehydes of formula (I) comprises oxidn. of the corresponding allyl alcohol (II) in the presence of a catalytically oxidising ruthenium cpd. or complex (III) and a N,N,N-trisubstd. N-oxide co-oxidant of formula (R')3-N -O (IV). R = CO-R , CH(OR )(OR ) or CH2-OR ; R , R = H, Me or Et; R = 1-4C alkoxy; R , R = 1-4C alkyl (opt. bonded to a 5- or 6-membered ring); R = lower alkyl or lower alkylcarbonyl; R' = alkyl, alkoxy or alkoxyalkyl with up to 6C or 2 R''s form a 5- or 6-membered heterocycle.

    139.
    发明专利
    未知

    公开(公告)号：AT124049T

    公开(公告)日：1995-07-15

    申请号：AT90103759

    申请日：1990-02-26

    Applicant: BASF AG

    Inventor： DOBLER WALTER DR ,  SCHUL WOLFGANG DR ,  PAUST JOACHIM DR ,  MITSCHKER ALFRED DR

    IPC: C07F9/6558 ,  G01N30/02

    Abstract: In a process for separating thiamine monophosphate from a solution of thiamine phosphates, the solution of thiamine phosphates, which contains the thiamine monophosphate and cocarboxylase is used at a pH of 2 to 7 and a cationic exchanger resin is used having a pKa of 1.0 to 4.5.

Patent Agency Ranking