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    1.
    发明专利
    未知

    公开(公告)号：DE19756400A1

    公开(公告)日：1999-06-24

    申请号：DE19756400

    申请日：1997-12-18

    Applicant: BASF AG

    Inventor： VOIT GUIDO DR ,  WITZEL TOM DR ,  BREITSCHEIDEL BORIS DR ,  LUYKEN HERMANN ,  ROS KARL-HEINZ DR ,  WAHL PETER DR

    IPC: C07C209/26 ,  C07C209/48 ,  C07C209/52 ,  C07C211/36

    Abstract: 3-Aminomethyl-3,5,5-trimethyl-cyclohexylamine (IPDA) with a cis:trans isomer ratio of at least 70/30 is obtained by catalytic imination of 3-cyano-3,5,5-trimethyl-cyclohexanone (IPN) followed by catalytic hydrogenation of the resulting imine in presence of an acid. A process for the production of IPDA with a cis:trans isomer ratio of at least 70/30 comprises: (a) imination of IPN with ammonia in presence of an imination catalyst at 20-150 degrees C and 1.5-30 Mpa, and (b) hydrogenation of the resulting imine at 80-160 degrees C and 5-30 Mpa in presence of ammonia on catalysts containing copper and/or a Group VIII metal and also in presence of an acid in amounts corresponding to an acid number of 0.1-2 based on the IPN used.

    2.
    发明专利
    未知

    公开(公告)号：DE50013714D1

    公开(公告)日：2006-12-21

    申请号：DE50013714

    申请日：2000-11-20

    Applicant: BASF AG

    Inventor： SIMON JOACHIM DR ,  WAHL PETER DR ,  SCHMIDT WILLI DR

    IPC: C07D295/02 ,  C07D295/023

    Abstract: In a process for purifying crude pyrrolidine to give a pyrrolidine composition comprising more than 99% (m/m) of pyrrolidine and less than 0.3% (m/m) of water, crude pyrrolidine comprising from 40 to 98% (m/m) of pyrrolidine and having a water content of more than 2% (m/m) is subjected to continuous distillation at a pressure at the top of less than 950 hPa in a column having a stripping section and a rectifying section.

    3.
    发明专利
    未知

    公开(公告)号：AT344797T

    公开(公告)日：2006-11-15

    申请号：AT00124368

    申请日：2000-11-20

    Applicant: BASF AG

    Inventor： SIMON JOACHIM DR ,  WAHL PETER DR ,  SCHMIDT WILLI DR

    IPC: C07D295/02 ,  C07D295/023

    Abstract: In a process for purifying crude pyrrolidine to give a pyrrolidine composition comprising more than 99% (m/m) of pyrrolidine and less than 0.3% (m/m) of water, crude pyrrolidine comprising from 40 to 98% (m/m) of pyrrolidine and having a water content of more than 2% (m/m) is subjected to continuous distillation at a pressure at the top of less than 950 hPa in a column having a stripping section and a rectifying section.

    4.
    发明专利
    未知

    公开(公告)号：AT229505T

    公开(公告)日：2002-12-15

    申请号：AT00107126

    申请日：2000-04-07

    Applicant: BASF AG

    Inventor： WULFF-DOERING JOACHIM DR ,  SIMON JOACHIM DR ,  HESSE MICHAEL DR ,  WAHL PETER DR

    IPC: B01J23/42 ,  B01J23/44 ,  B01J23/63 ,  C07B61/00 ,  C07D207/32 ,  C07D207/323

    Abstract: The preparation of pyrrole derivatives (I) comprises catalytic dehydrogenation of pyrrolidines (II) at 150-300 degrees C and 0.01-50 bar on a catalyst comprising: (1) a composite (30-100 wt.%) comprising either (i) palladium on a rare earth or Group IVB metal oxide or (ii) platinum and palladium on alumina or a rare earth or Group IVB metal oxide; and (2) alkali(ne earth) metal oxide (0-70 wt.%). The preparation of pyrrole derivatives of formula (I) comprises catalytic dehydrogenation of pyrrolidines of formula (II) a 150-300 degrees C and 0.01-50 bar on a catalyst comprising: (1) a composite (30-100 wt.%) comprising either (i) palladium on a rare earth or Group IVB metal oxide or (ii) platinum and palladium on alumina or a rare earth or Group IVB metal oxide; and (2) alkali(ne earth) metal oxide (0-70 wt.%). R -R = H, 1-12C alkyl or 3-12C cycloalkyl.

    6.
    发明专利
    未知

    公开(公告)号：DE4301776A1

    公开(公告)日：1994-07-28

    申请号：DE4301776

    申请日：1993-01-23

    Applicant: BASF AG

    Inventor： PFAB PETER DR ,  WAHL PETER DR ,  FRANZ DIETER DR

    IPC: C07D207/32 ,  C07D207/323 ,  C07D295/02

    Abstract: Process for the purification of crude pyrroles obtained in the preparation of pyrroles of the general formula I in which R is hydrogen or a C1-C6-alkyl radical, characterised in that the mixture which contains the crude pyrrole is treated with an acid or an activated carboxylic acid derivative and the pyrrole is removed from the mixture by distillation at reduced pressure and a bottom temperature of up to 160@C.

    9.
    发明专利
    未知

    公开(公告)号：DE59405738D1

    公开(公告)日：1998-05-28

    申请号：DE59405738

    申请日：1994-01-07

    Applicant: BASF AG

    Inventor： PFAB PETER DR ,  WAHL PETER DR ,  FRANZ DIETER DR

    IPC: C07D207/32 ,  C07D207/323

    Abstract: Process for the purification of crude pyrroles obtained in the preparation of pyrroles of the general formula I in which R is hydrogen or a C1-C6-alkyl radical, characterised in that the mixture which contains the crude pyrrole is treated with an acid or an activated carboxylic acid derivative and the pyrrole is removed from the mixture by distillation at reduced pressure and a bottom temperature of up to 160@C.

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