中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

61 records (took 0.024 seconds)

    3.
    发明专利
    未知

    公开(公告)号：AT116315T

    公开(公告)日：1995-01-15

    申请号：AT90120548

    申请日：1990-10-26

    Applicant: BASF AG

    Inventor： HICKMANN ECKHARD DR ,  SEELE RAINER DR ,  KOBER REINER DR ,  ISAK HEINZ DR

    IPC: C07D405/06 ,  C07D301/18 ,  C07D521/00

    Abstract: Process for the preparation of cis-2-(1H-1,2,4-triazol-1-ylmethyl)-2-(halophenyl)-3-(halophenyl)oxira ne I by epoxidation of Z-3-(1H-1,2,4-triazol-1-yl)-2-(halophenyl)-1-(halophenyl)propene II, in which halogen is in each case fluorine, chlorine or bromine, by reaction of the crude epoxidation product with one or more reducing agents, in which the reducing agent is added to the reaction mixture in a substantially higher amount than is necessary for destroying any peroxide compounds present.

    4,4'-Di:amino:benzhydrol(s) prepn. - by hydrogenation of 4,4'-di:amino:benzophenone(s) in presence of hydrogenation catalyst and acid and/or salt
    5.
    发明专利
    4,4'-Di:amino:benzhydrol(s) prepn. - by hydrogenation of 4,4'-di:amino:benzophenone(s) in presence of hydrogenation catalyst and acid and/or salt 未知

    公开(公告)号：DE4202512A1

    公开(公告)日：1992-08-13

    申请号：DE4202512

    申请日：1992-01-30

    Applicant: BASF AG

    Inventor： HICKMANN ECKHARD DR

    IPC: C07C13/00 ,  C07C215/68 ,  C07D295/096 ,  C09B11/02

    Abstract: Prepn. of 4,41-diaminobenzhydrols of formula (I) is effected by reaching 4,41-diaminobenzophenones of formula (II) with H2 at -20 to 100 deg.C/0.5-100 bar in presence of a hydrogenation catalyst and 0-20 mol. equivs. (based on (II)) of an acid and/or salt (e.g. H2SO4, HCl, H3PO4 or NaH sulphate) A = 1,4-phenylene opt. substd. by 1-12C alkyl and/or 1-12C alkoxy' R1 and R2 = H, 1-20C alkyl, 3-8C cycloalkyl, 7-12C aralkyl, aryl (opt. substd. by 1-12C alkyl and/or 1-12C alkoxy), 2-8C omego-hydroxyalkyl, (CH2.CH(R3).O)n CH2.CH(R3)OR4 or 2-7C alkylene (opt. substd. by 1-12C alkyl and opt. interrupted by -O-, -S- or -N(R4)-); R3 = H or Me; R4 = H or 1-20C alkyl; and n = 0-40. Pref. the catalyst is a Pd-contg. catalyst and is used together with 0.001-20 (esp. 0.5-10) mol. equivs. (based on (II)) of an acid. USE/ADVANTAGE - (I) are intermediates for di- and tri-aminotriphenylmethane dyes as well as for inks such as crystal violet lactares, levio-auramines or sulphinates. They are obtd. without the flammability, waste disposal and toxicity problems.

    6.
    发明专利
    未知

    公开(公告)号：DE3910220A1

    公开(公告)日：1990-10-04

    申请号：DE3910220

    申请日：1989-03-30

    Applicant: BASF AG

    Inventor： NAEUMANN FRITZ DR ,  HICKMANN ECKHARD DR

    IPC: C07C45/51 ,  C07C49/213 ,  C07C49/223 ,  C07C49/255 ,  C07D317/54

    Abstract: Benzyl ketones of the general formula I (I) where R1 is C1-C8-alkyl which is unsubstituted or substituted by cycloalkyl or aryl and R2 and R3 are each halogen, C1-C4-alkyl, hydroxyl, C1-C4-alkoxy or C2-C4-methylenedioxy, are prepared by a process in which a glycol monoether of the general formula II (II) where R1, R2 and R3 have the abovementioned meanings and R4 is C1-C8-alkyl, is converted in the presence of silica, a phosphate or a zeolite at from 50 DEG to 500 DEG C. and under from 0.01 to 50 bar.

Patent Agency Ranking