公开(公告)号：AT253038T

公开(公告)日：2003-11-15

申请号：AT00113328

申请日：2000-06-23

Applicant: DEGUSSA

Inventor： DRAUZ KARLHEINZ PROF ,  BURKHARDT OLAF DR ,  BELLER MATTHIAS PROF ,  ECKERT MARKUS DR ,  MORADI WAHED DR ,  NEUMANN HELFRIED DR

IPC: B01J31/04 ,  B01J31/20 ,  B01J31/22 ,  C07B61/00 ,  C07C231/08 ,  C07C233/47

Abstract: Preparation of N-acyl amino acids comprises reacting an amide with an aldehyde in the presence of an acid, carbon monoxide and a rhodium, iridium or ruthenium catalyst. Preparation of N-acyl amino acids of formula (I) comprises reacting an amide of formula R'CONHR with an aldehyde of formula RCHO in the presence of an acid, carbon monoxide and a rhodium, iridium or ruthenium catalyst. R = H, CO, 1-12C alkyl, 2-12C alkylene, 1-8C alkoxy, 4-18C aryl or 1-12C alkyl-4-18C aryl; and R' and R'' = 1-26C alkyl, 2-24C alkenyl, 1-12C alkyl-4-18C aryl or 2-12C alkenyl-4-18C aryl.

公开(公告)号：AT249882T

公开(公告)日：2003-10-15

申请号：AT00127625

申请日：2000-12-16

Applicant: DEGUSSA

Inventor： BURKHARDT OLAF DR ,  WOELTINGER JENS DR ,  BOMMARIUS ANDREAS DR ,  ALMENA JUAN DR ,  HENNIGES HANS DR ,  DRAUZ KARLHEINZ PROF ,  KARAU ANDREAS DR ,  PHILIPPE JEAN-LOUIS DR ,  KRIMMER HANS-PETER DR ,  OEHME GUENTHER PROF

IPC: B01J31/22 ,  B01J31/16 ,  B01J31/18 ,  B01J31/24 ,  C07B31/00 ,  C07B53/00 ,  C07B61/00 ,  C07C231/12 ,  C07C233/47 ,  C08F8/00 ,  C08F8/30 ,  C08F8/40 ,  C08F30/00 ,  C08G85/00

Abstract: Molecular weight-enlarged, homogeneously soluble ligands are provided that are especially useful for hydrogenation catalysts, wherein the ligands contain homochiral active centers of bis(3,4-diarylphosphinyl)pyrrolidines, and their use in producing cataylsts for enantioselective reactions, as well as the catalysts thus produced.

公开(公告)号：BR9804474A

公开(公告)日：2000-02-29

申请号：BR9804474

申请日：1998-11-06

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  BURKHARDT OLAF DR ,  MORAWIETZ MARCUS DR ,  WANHEERTUM RUDOLF DR ,  BOURREL AGNES

IPC: C07D307/20 ,  C07B35/06 ,  C07C20060101 ,  C07C41/09 ,  C07C43/18 ,  C07D307/06 ,  C07D307/08 ,  C07D309/04 ,  C07D493/04 ,  C07H1/00 ,  C07H3/00

Abstract: Process for producing 5- or 6-membered cyclic ethers (anhydropolyols) comprises subjecting polyols having at least 4 C atoms and at least 2 OH groups to cyclodehydration at at least 100 degrees C in the presence of water, an acid catalyst, an acid-stable hydrogenation catalyst and hydrogen. Preferably the reaction temperature is 100-380 degrees C, preferably 180-280 degrees C. The H2 pressure is 1-20 MPa, preferably 3-10 MPa. The hydrogenation catalyst comprises Ru, Rh, Pd and/or Pt as metals or metal compounds. The hydrogenation catalyst is used in an amount of 0.001-10 (preferably 0.01-1) wt.% based on the polyol. The acid catalyst is a 1-10C aliphatic carboxylic acid, preferably formic, acetic or propionic acid. The acid catalyst is used in an amount of 0.1-20 (especially 0.5-10) wt.% based on the polyol. The polyol is a tetritol, pentitol or hexitol.

公开(公告)号：MY119822A

公开(公告)日：2005-07-29

申请号：MYPI9805010

申请日：1998-11-04

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  BURKHARDT OLAF DR ,  MORAWIETZ MARCUS DR ,  VANHEERTUM RUDOLF DR ,  BOURREL AGNES

IPC: C07D307/06 ,  C07D307/20 ,  C07B35/06 ,  C07C20060101 ,  C07C41/09 ,  C07C43/18 ,  C07D307/08 ,  C07D309/04 ,  C07D493/04 ,  C07H1/00 ,  C07H3/00

Abstract: FIVE-MEMBERED OR SIX-MEMBERED CYCLIC ETHERS, IN PARTICULAR ANHYDROPOLYOLS, CAN BE OBTAINED BY CYCLODEHYDRATION OF POLYOLS HAVING AT LEAST 4 C ATOMS AND AT LEAST 2 HYDROXYL GROUPS IN THE PRESENCE OF WATER AND AN ACIDIC CATALYST. ACCORDING TO THE INVENTION THE CYCLODEHYDRATION IS PROMOTED AND THE FORMATION OF POLYMERS IS AVOIDED IF THE ACID-CATALYSED CYCLODEHYDRATION IS CARRIED OUT IN THE PRESENCE OF AN ACID-STABLE HYDROGENATING CATALYST IN A HYDROGEN ATMOSPHERE. ANHYDROHEXITOLS CAN BE OBTAINED BOTH FROM HEXITOLS AND FROM SUCROSE.

公开(公告)号：DE19749202C1

公开(公告)日：1999-05-27

申请号：DE19749202

申请日：1997-11-07

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  BURKHARDT OLAF DR ,  MORAWIETZ MARCUS DR ,  VANHEERTUM RUDOLF DR ,  BOURREL AGNES

IPC: C07D307/20 ,  C07B35/06 ,  C07C20060101 ,  C07C41/09 ,  C07C43/18 ,  C07D307/06 ,  C07D307/08 ,  C07D309/04 ,  C07D493/04 ,  C07H1/00 ,  C07H3/00

Abstract: Process for producing 5- or 6-membered cyclic ethers (anhydropolyols) comprises subjecting polyols having at least 4 C atoms and at least 2 OH groups to cyclodehydration at at least 100 degrees C in the presence of water, an acid catalyst, an acid-stable hydrogenation catalyst and hydrogen. Preferably the reaction temperature is 100-380 degrees C, preferably 180-280 degrees C. The H2 pressure is 1-20 MPa, preferably 3-10 MPa. The hydrogenation catalyst comprises Ru, Rh, Pd and/or Pt as metals or metal compounds. The hydrogenation catalyst is used in an amount of 0.001-10 (preferably 0.01-1) wt.% based on the polyol. The acid catalyst is a 1-10C aliphatic carboxylic acid, preferably formic, acetic or propionic acid. The acid catalyst is used in an amount of 0.1-20 (especially 0.5-10) wt.% based on the polyol. The polyol is a tetritol, pentitol or hexitol.