公开(公告)号：CZ289741B6

公开(公告)日：2002-03-13

申请号：CZ227894

申请日：1993-03-16

Applicant: HOECHST AG

Inventor： ROSCHER GUNTER ,  LITTERER HEINZ ,  ENGELMANN AXEL ,  KAUFMANN WOLF-DIETMAR ,  LAUGWITZ BERND ,  SCHNABEL HANS-DIETMAR

IPC: C07D291/06 ,  C07B63/00

Abstract: The invention relates to a process for the preparation of non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide by reaction of salts of amidosulfonic acids with diketenes to give a salt of acetoacetamidosulfonic acid, through ring closure by the action of at least about an equivalent amount of sulfur trioxide, whereby at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of the indicated compounds, directly returning the remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction. The invention further concerns to an arrangement for carrying out the above-described process.

公开(公告)号：BR9306090A

公开(公告)日：1997-11-18

申请号：BR9306090

申请日：1993-03-16

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  LITTERER HEINZ ,  ENGELMANN AXEL ,  KAUFMANN WOLF-DIETMAR ,  LAUGWITZ BERND ,  SCHNABEL HANS-DIETMAR

IPC: C07D291/06

Abstract: PCT No. PCT/EP93/00606 Sec. 371 Date Jun. 19, 1995 Sec. 102(e) Date Jun. 19, 1995 PCT Filed Mar. 16, 1993 PCT Pub. No. WO93/19055 PCT Pub. Date Sep. 30, 1993The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by the action of at least about an equivalent amount of SO3, at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H (II) into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of compounds (I) and/or (II), directly returning :he remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction.

公开(公告)号：HUT71700A

公开(公告)日：1996-01-29

申请号：HU9402643

申请日：1993-03-16

Applicant: HOECHST AG

Inventor： LITTERER HEINZ ,  SCHNABEL HANS-DIETMAR ,  LAUGWITZ BERND ,  ROSCHER GUENTER ,  ENGELMANN AXEL ,  KAUFMANN WOLF-DIETMAR

IPC: C07D291/06

Abstract: PCT No. PCT/EP93/00606 Sec. 371 Date Jun. 19, 1995 Sec. 102(e) Date Jun. 19, 1995 PCT Filed Mar. 16, 1993 PCT Pub. No. WO93/19055 PCT Pub. Date Sep. 30, 1993The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by the action of at least about an equivalent amount of SO3, at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H (II) into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of compounds (I) and/or (II), directly returning :he remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction.

公开(公告)号：AU3748893A

公开(公告)日：1993-10-21

申请号：AU3748893

申请日：1993-03-16

Applicant: HOECHST AG

Inventor： ROSCHER GUNTER ,  LITTERER HEINZ ,  ENGELMANN AXEL ,  KAUFMANN WOLF-DIETMAR ,  LAUGWITZ BERND ,  SCHNABEL HANS-DIETMAR

IPC: C07D291/06

Abstract: PCT No. PCT/EP93/00606 Sec. 371 Date Jun. 19, 1995 Sec. 102(e) Date Jun. 19, 1995 PCT Filed Mar. 16, 1993 PCT Pub. No. WO93/19055 PCT Pub. Date Sep. 30, 1993The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by the action of at least about an equivalent amount of SO3, at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H (II) into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of compounds (I) and/or (II), directly returning :he remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction.

公开(公告)号：ZA931857B

公开(公告)日：1993-10-05

申请号：ZA931857

申请日：1993-03-16

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  ENGELMANN AXEL ,  LAUGWITZ BERND ,  LITTERER HEINZ ,  KAUFMANN WOLF-DIETMAR ,  SCHNABEL HANS-DIETMAR

IPC: C07D291/06 ,  C07D

Abstract: PCT No. PCT/EP93/00606 Sec. 371 Date Jun. 19, 1995 Sec. 102(e) Date Jun. 19, 1995 PCT Filed Mar. 16, 1993 PCT Pub. No. WO93/19055 PCT Pub. Date Sep. 30, 1993The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by the action of at least about an equivalent amount of SO3, at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H (II) into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of compounds (I) and/or (II), directly returning :he remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction.

公开(公告)号：AU2978889A

公开(公告)日：1989-08-17

申请号：AU2978889

申请日：1989-02-10

Applicant: HOECHST AG

Inventor： WEGENER PETER ,  FELDHUES MICHAEL ,  LITTERER HEINZ

IPC: B01J27/053 ,  B01J31/02 ,  C07B61/00 ,  C07D333/32 ,  C07D333/72 ,  C07D333/78 ,  C07F9/6553 ,  H01B1/12

Abstract: Process for the preparation of thiophene ethers. Thiophene ethers having relatively large side groups can easily be obtained if 2-, 3-, 2,3-, 2,4- or 3,4-C1-C3-alkoxythiophenes are reacted with a compound containing an OH group in the presence of an acidic catalyst. The novel thiophene ethers are suitable as monomers for electrically conducting polymers.

公开(公告)号：NO890585L

公开(公告)日：1989-08-14

申请号：NO890585

申请日：1989-02-10

Applicant: HOECHST AG

Inventor： WEGENER PETER ,  FELDHUES MICHAEL ,  LITTERER HEINZ

IPC: B01J27/053 ,  B01J31/02 ,  C07B61/00 ,  C07D333/32 ,  C07D333/72 ,  C07D333/78 ,  C07F9/6553 ,  H01B1/12

Abstract: Process for the preparation of thiophene ethers. Thiophene ethers having relatively large side groups can easily be obtained if 2-, 3-, 2,3-, 2,4- or 3,4-C1-C3-alkoxythiophenes are reacted with a compound containing an OH group in the presence of an acidic catalyst. The novel thiophene ethers are suitable as monomers for electrically conducting polymers.

公开(公告)号：CA1182098A

公开(公告)日：1985-02-05

申请号：CA410405

申请日：1982-08-30

Applicant: HOECHST AG

Inventor： BALTES HERBERT ,  LEUPOLD ERNST I ,  LITTERER HEINZ ,  WUNDER FRIEDRICH

IPC: B01J29/00 ,  B01J29/50 ,  B01J29/86 ,  C01B35/12 ,  C01B39/10 ,  C01B39/30 ,  C07C1/00 ,  C07C1/20 ,  C07C67/00 ,  B01J29/28 ,  C01B33/20 ,  C07C11/02

Abstract: of the disclosure: The invention provides boro-aluminosilicates having a zeolite structure, a process for their manufacture, and their use. For their manufacture, a mixture of silicon, aluminum, boron, sodium, potassium and tetramethylammonium compounds and water is prepared in a specific quantitative ratio, and heated in a closed vessel. The boro-aluminosilicates are used as catalysts in the manufacture of hydrocarbons, especially C2-C4-olefins, from methanol.

公开(公告)号：CA1182096A

公开(公告)日：1985-02-05

申请号：CA411439

申请日：1982-09-15

Applicant: HOECHST AG

Inventor： BALTES HERBERT ,  LEUPOLD ERNST I ,  LITTERER HEINZ ,  WUNDER FRIEDRICH

IPC: B01J29/00 ,  B01J29/04 ,  C01B39/04 ,  C01B39/06 ,  C01G15/00 ,  C07C1/00 ,  C07C1/20 ,  C07C11/02 ,  C07C67/00 ,  B01J29/28

Abstract: of the disclosure: The invention provides gallium- and/or indium-containing zeolites, a process for their manufacture, and their use. For their manufacture, a mixture of silicon, aluminum, sodium, potassium and tetramethylammonium compounds, water and gallium and/or indium compounds is prepared in a specific quantitative ratio, and heated in a closed vessel. The zeolites may be used as catalysts in the manufacture of hydrocarbons, especially C2-C4-olefins, from methanol.

公开(公告)号：ZA838200B

公开(公告)日：1984-06-27

申请号：ZA838200

申请日：1983-11-03

Applicant: HOECHST AG

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

IPC: B01J29/00 ,  B01J29/50 ,  B01J29/89 ,  C01B39/06 ,  C01B39/30 ,  C07C1/20 ,  C07C11/20 ,  C01B ,  B01J ,  C07C