公开(公告)号：AU578290B2

公开(公告)日：1988-10-20

申请号：AU4288185

申请日：1985-05-24

Applicant: HOECHST AG

Inventor： EICHLER KLAUS ,  LEUPOLD ERNST INGO

IPC: C07D333/28

Abstract: The invention relates to a process for the isomerization of halogenated thiophenes on zeolite catalysts. In this manner, in particular, 2-chlorothiophene is isomerized to 3-chlorothiophene and 2-bromothiophene is isomerized to 3-bromothiophene. Particularly suitable zeolites are synthetic zeolites of the pentasil, mordenite or faujasite type in their acid form.

公开(公告)号：BR8700302A

公开(公告)日：1987-12-01

申请号：BR8700302

申请日：1987-01-23

Applicant: HOECHST AG

Inventor： DRISCOLL ROBERT KENNETH ,  LEUPOLD ERNST INGO ,  SCHUETZ JOACHIM

IPC: C07C69/675 ,  C07C67/48 ,  C07C67/54 ,  C07C69/67 ,  C07C69/716

Abstract: The invention relates to hemiacetals of glyoxylic esters and to a process for obtaining a glyoxylic ester having a C1 to C4 ester group from a mixture which essentially contains a glyoxylic ester of this type plus water and/or a C1 to C4 alcohol ROH. In this, the glyoxylic ester and the water and/or the alcohol are partly or completely in a chemically bonded form. A higher alcohol R'OH having a boiling point above 180 DEG C. is added, and distillation is carried out under a pressure not exceeding 800 mbar to remove first the water and/or the alcohol ROH and then the glyoxylic ester.

公开(公告)号：ZA87505B

公开(公告)日：1987-09-30

申请号：ZA87505

申请日：1987-01-23

Applicant: HOECHST AG

Inventor： DRISCOLL ROBERT KENNETH ,  LEUPOLD ERNST INGO ,  SCHUETZ JOACHIM

IPC: C07C69/675 ,  C07C67/48 ,  C07C67/54 ,  C07C69/67 ,  C07C69/716 ,  C07C

Abstract: The invention relates to hemiacetals of glyoxylic esters and to a process for obtaining a glyoxylic ester having a C1 to C4 ester group from a mixture which essentially contains a glyoxylic ester of this type plus water and/or a C1 to C4 alcohol ROH. In this, the glyoxylic ester and the water and/or the alcohol are partly or completely in a chemically bonded form. A higher alcohol R'OH having a boiling point above 180 DEG C. is added, and distillation is carried out under a pressure not exceeding 800 mbar to remove first the water and/or the alcohol ROH and then the glyoxylic ester.

公开(公告)号：ZA867595B

公开(公告)日：1987-05-27

申请号：ZA867595

申请日：1986-10-06

Applicant: HOECHST AG

Inventor： FRITSCHE-LANG WOLFRAM ,  LEUPOLD ERNST INGO ,  SCHLINGMANN MERTEN

IPC: A23L27/00 ,  A23L27/20 ,  A23L29/00 ,  C07B61/00 ,  C07H7/033 ,  C11D3/20 ,  C11D3/22 ,  C07H ,  A23L ,  C11D

公开(公告)号：FI864021A

公开(公告)日：1987-04-08

申请号：FI864021

申请日：1986-10-03

Applicant: HOECHST AG

Inventor： FRITSCHE-LANG WOLFRAM ,  LEUPOLD ERNST INGO ,  SCHLINGMANN MERTEN

IPC: A23L27/00 ,  A23L27/20 ,  A23L29/00 ,  C07B61/00 ,  C07H7/033 ,  C11D3/20 ,  C11D3/22 ,  C07H

公开(公告)号：DK476586D0

公开(公告)日：1986-10-06

申请号：DK476586

申请日：1986-10-06

Applicant: HOECHST AG

Inventor： FRITSCHE-LANG WOLFRAM ,  LEUPOLD ERNST INGO ,  SCHLINGMANN MERTEN

IPC: A23L27/00 ,  A23L27/20 ,  A23L29/00 ,  C07B61/00 ,  C07H7/033 ,  C11D3/20 ,  C11D3/22 ,  C07H

公开(公告)号：FI864021A0

公开(公告)日：1986-10-03

申请号：FI864021

申请日：1986-10-03

Applicant: HOECHST AG

Inventor： FRITSCHE-LANG WOLFRAM ,  LEUPOLD ERNST INGO ,  SCHLINGMANN MERTEN

IPC: A23L27/00 ,  A23L27/20 ,  A23L29/00 ,  C07B61/00 ,  C07H7/033 ,  C11D3/20 ,  C11D3/22 ,  C07H

公开(公告)号：BR8502634A

公开(公告)日：1986-02-04

申请号：BR8502634

申请日：1985-05-31

Applicant: HOECHST AG

Inventor： EICHLER KLAUS ,  LEUPOLD ERNST INGO ,  ARPE HANS-JURGEN ,  BALTES HERBERT

IPC: C07B61/00 ,  B01J21/00 ,  B01J29/89 ,  C07C67/00 ,  C07C209/00 ,  C07C209/64 ,  C07C209/68 ,  C07C211/47 ,  C07C85/11 ,  C07C87/56

Abstract: The invention relates to a process for the isomerization of o-, m- or p-toluidine, or of a mixture of them, on a zirconium-containing zeolite catalyst of the pentasil type. Catalysts of this type are distinguished by particularly high activity and a long useful life. The invention particularly relates to the preparation of m-toluidine by isomerization of o- and/or p-toluidine on zirconium-containing zeolite catalysts of the pentasil type.

公开(公告)号：ZA85418B

公开(公告)日：1985-08-28

申请号：ZA85418

申请日：1985-01-18

Applicant: HOECHST AG

Inventor： EBERTZ WOLFGANG ,  BALTES HERBERT ,  LEUPOLD ERNST INGO ,  LITTERER HEINZ ,  SCHUETZ JOACHIM ,  WUNDER FRIEDRICH

IPC: B01J29/00 ,  C07B61/00 ,  C07C1/00 ,  C07C1/20 ,  C07C11/02 ,  C07C67/00 ,  C07C

公开(公告)号：ZA8500253B

公开(公告)日：1985-08-28

申请号：ZA8500253

申请日：1985-01-11

Applicant: HOECHST AG

Inventor： DRISCOLL ROBERT KENNETH ,  LEUPOLD ERNST INGO ,  EBERTZ WOLFGANG ,  WUNDER FRIEDRICH

IPC: C07C69/67 ,  B01J19/32 ,  C07C

CPC classification number: B01J19/32 ,  B01J2219/3221 ,  B01J2219/3222 ,  B01J2219/32296 ,  B01J2219/32425 ,  B01J2219/32466