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    5.
    发明专利
    未知

    公开(公告)号：ES2055837T3

    公开(公告)日：1994-09-01

    申请号：ES90115637

    申请日：1990-08-16

    Applicant: BASF AG

    Inventor： STECK WERNER DR ,  RUST HARALD ,  LERMER HELMUT DR ,  FRITZ NAEUMANN DR

    IPC: C07C253/34 ,  C07C255/50

    Abstract: A process for the separation of ortho-, meta- and para-tolunitrile from ternary mixtures of isomers entails removing ortho-tolunitrile from these mixtures by distillation under pressures of from 102 and 105 Pa and with a reflux ratio of from 1:1 to 200:1, and distilling the remaining binary mixture of meta- and para-tolunitrile to concentrate to more than 75 mol-% para-tolunitrile, and freezing out the paratolunitrile at below 26 DEG C., and a process for the preparation of suitable ternary mixtures of isomers entails isomerization of pure ortho-, meta- or para-tolunitrile or mixtures thereof at from 380 DEG to 580 DEG C. on zeolite catalysts.

    7.
    发明专利
    未知

    公开(公告)号：DE4010254A1

    公开(公告)日：1991-10-02

    申请号：DE4010254

    申请日：1990-03-30

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  PRIESTER CLAUS-ULRICH DR ,  KOPPENHOEFER GERHARD DR ,  HARDER WOLFGANG DR ,  WITZEL TOM DR ,  LERMER HELMUT DR ,  KOEHLER ULRICH DR

    IPC: B01J23/40 ,  B01J23/74 ,  B01J29/06 ,  C07B61/00 ,  C07C209/00 ,  C07C209/26 ,  C07C209/48 ,  C07C211/36

    Abstract: Process for the preparation of 2-(3-aminopropyl)cycloalkylamines of the general formula I in which the index n is an integer from 1 to 4, from 2-(2-cyanoethyl)cycloalkanones of the general formula II in which the index n has the abovementioned meaning, by carrying out the following steps in two reaction spaces spatially separated from one another: a) reacting the 2-(2-cyanoethyl)cycloalkanones of the formula II in a first reaction space with excess ammonia over acidic heterogeneous catalysts at temperatures of 20 to 150 DEG C and pressures of 15 to 500 bar and b) hydrogenating the reaction products in a second reaction space with hydrogen in the presence of excess ammonia over cobalt-, nickel-, ruthenium- and/or other noble metal-containing catalysts which may contain basic components or are present on neutral or basic supports at temperatures of 60 to 150 DEG C and pressures of 100 to 500 bar, and also the novel compound 2-(3-aminopropyl)cyclopentylamine.

    8.
    发明专利
    未知

    公开(公告)号：DE4007925A1

    公开(公告)日：1991-09-19

    申请号：DE4007925

    申请日：1990-03-13

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  WITZEL TOM DR ,  HORLER HANS DR ,  LERMER HELMUT DR

    IPC: B01J21/12 ,  B01J29/06 ,  C07B61/00 ,  C07C45/45 ,  C07C45/54 ,  C07C49/597

    Abstract: Process for the preparation of cyclopentenones of the general formula I … … in which R to R , independently of one another, denote hydrogen or an organic radical, by reacting carboxylic esters of the general formulae IIa and/or IIb and/or IIc… R CH = CR -CHR -CHR -CO2R (IIa) and/or… R CH2-CR = CR -CHR -CO2R (IIb) and/or… R CH2-CHR -CR = CR -CO2R (IIc),… in which R to R have the abovementioned meanings and R represents C1- to C8-alkyl, over acid heterogeneous catalysts at temperatures of 50 to 800 DEG C and pressures of 0.001 to 50 bar.

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