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    PROCESS FOR THE PREPARATION OF GLYCOLOYLANILIDES
    3.
    发明专利
    PROCESS FOR THE PREPARATION OF GLYCOLOYLANILIDES 未知

    公开(公告)号：CA2147382A1

    公开(公告)日：1995-10-20

    申请号：CA2147382

    申请日：1995-04-18

    Applicant: HOECHST AG

    Inventor： PLANKER SIEGFRIED ,  PAPENFUHS THEODOR

    IPC: B01J23/42 ,  B01J23/44 ,  B01J27/045 ,  C07B61/00 ,  C07C209/26 ,  C07C209/36 ,  C07C231/02 ,  C07C231/10 ,  C07C231/12 ,  C07C235/16 ,  C07C235/68 ,  C07C237/42 ,  C07C255/08 ,  C07C311/45 ,  C07C253/30 ,  C07C255/60 ,  C07C303/40 ,  C07C311/46

    Abstract: Process for the preparation of glycoloylanilides The pre ent invention relates to a process for the preparation of glycoloylanilides of the formula (G) (G) which involves reacting a nitrobenzene of the formula (A) with hydrogen and, if desired, with a carbonyl compound of the formula (B), in the presence of a catalyst which comprises noble metal and of a solvent, in accordance with reaction equation (1) (1) (A) (B) (C) separating off the catalyst and reacting the compound of the formula (C) with chloroacetyl chloride, in accordance with reaction equation (2) (2) (C) (D) to give a compound of the formula (D), reacting this with a benzyl alcohol of the formula (E), and with a base, in accordance with reaction equation (3) (3) (D) (E) (F) or reacting the compound of the formula (C) with an Obenzylglycoloyl chloride of the formula (R), in accordance with reaction equation (4) (4) (C) (K) (F) and reacting the O-benzylglycoloylanilide of the formula (F), in the presence of a catalyst which comprises noble metal, with hydrogen, in accordance with reaction equation (5) (5) (F) (G) (H) to give the glycoloylanilide of the formula (G). The present invention also relates to new O-benzylglycoloyl-anilides of the formula (F) and to a process for their preparation.

    2,3,4-TRIFLUORO-N-ETHYLANILINE AND PROCESSES FOR ITS PREPARATION
    4.
    发明专利
    2,3,4-TRIFLUORO-N-ETHYLANILINE AND PROCESSES FOR ITS PREPARATION 未知

    公开(公告)号：CA2111714A1

    公开(公告)日：1994-06-19

    申请号：CA2111714

    申请日：1993-12-17

    Applicant: HOECHST AG

    Inventor： PAPENFUHS THEODOR ,  PLANKER SIEGFRIED

    IPC: B01J23/40 ,  C07B61/00 ,  C07C209/26 ,  C07C209/36 ,  C07C211/52

    Abstract: of the disclosure 2,3,4-Trifluoro-N-ethylaniline and process for the preparation thereof The present invention relates to the compound 2,3,4-tri-fluoro-N-ethylaniline and to a process for the preparation thereof. 2,3,4-Trifluoro-N-ethylaniline is prepared by reducing 1 mol of 2,3,4-trifluoronitrobenzene with hydrogen in an organic solvent which is inert towards the reactants and under the reaction conditions as diluent in the presence of a modified nickel or noble metal catalyst and a buffer material at temperatures of from about 80.degree.C to about 120.degree.C at pH values of from about 7 to 10 at atmospheric pressure or increased pressure to form 2,3,4-trifluoro-aniline and subsequently subjecting this, through addition of from 1 to about 1.5 mol of acetaldehyde, based on the 2,3,4-trifluoroaniline formed, with or without an inert organic solvent as diluent, to reductive alkylation with hydrogen at temperatures of from about 40.degree.C to about 100.degree.C.

    PROCESS FOR THE PREPARATION OF HYDROXYCARBOXANILIDES
    5.
    发明专利
    PROCESS FOR THE PREPARATION OF HYDROXYCARBOXANILIDES 未知

    公开(公告)号：CA2152431A1

    公开(公告)日：1995-12-24

    申请号：CA2152431

    申请日：1995-06-22

    Applicant: HOECHST AG

    Inventor： DIERDORF ANDREAS ,  PLANKER SIEGFRIED ,  PAPENFUHS THEODOR

    IPC: C07C231/12 ,  C07C235/16 ,  C07C253/30 ,  C07C255/60

    Abstract: The present invention relates to a process for the preparation of hydroxycarboxanilides of the formula (1) (1), in which R1 and R2 are identical or different and are hydrogen, halogen, a nitro group, a cyano group, a straight-chain or branched alkyl, alkenyl, alkynyl or alkoxy group having 1 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 6 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, R3 is hydrogen or a straight-chain or branched alkyl group having 1 to 12 carbon atoms and n is an integer from 1 to 12, by reacting a halocarboxanilide of the formula (2) (2), in which R1, R2, R3 and n have the same meaning as in formula (1) and Hal is chlorine, bromine or iodine, with a basic compound in a solvent mixture comprising water and one or more polar aprotic solvents at a temperature of 40 to 180.degree.C.

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