公开(公告)号：AU8164094A

公开(公告)日：1995-06-29

申请号：AU8164094

申请日：1994-12-21

Applicant: HOECHST AG

Inventor： WEBER JURGEN ,  SPRINGER HELMUT

IPC: B01J23/46 ,  B01J27/13 ,  B01J31/12 ,  B01J31/20 ,  C07B61/00 ,  C07C5/25 ,  C07C11/02 ,  C07C45/50 ,  C07C45/67 ,  C07C47/02 ,  C07B41/06

Abstract: Aldehydes having 8 to 17 carbon atoms in the molecule which are substituted in the alpha -position by an alkyl radical are obtained from the terminal olefins having one carbon atom less. To this end, the olefins are first isomerised in the presence of iron carbonyl and thereupon hydroformylated in the presence of rhodium as catalyst without removing the iron compound.

公开(公告)号：PL306338A1

公开(公告)日：1995-06-26

申请号：PL30633894

申请日：1994-12-16

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  SPRINGER HELMUT

IPC: B01J23/46 ,  B01J27/13 ,  B01J31/12 ,  B01J31/20 ,  C07B61/00 ,  C07C5/25 ,  C07C11/02 ,  C07C45/50 ,  C07C45/67 ,  C07C47/02

Abstract: Aldehydes having 8 to 17 carbon atoms in the molecule which are substituted in the alpha -position by an alkyl radical are obtained from the terminal olefins having one carbon atom less. To this end, the olefins are first isomerised in the presence of iron carbonyl and thereupon hydroformylated in the presence of rhodium as catalyst without removing the iron compound.

公开(公告)号：CA2138222A1

公开(公告)日：1995-06-24

申请号：CA2138222

申请日：1994-12-15

Applicant: HOECHST AG

Inventor： SPRINGER HELMUT ,  WEBER JUERGEN

IPC: B01J23/46 ,  B01J27/13 ,  B01J31/12 ,  B01J31/20 ,  C07B61/00 ,  C07C5/25 ,  C07C11/02 ,  C07C45/50 ,  C07C45/67 ,  C07C47/02

Abstract: Aldehydes having 8 to 17 carbon atoms in the molecule which are substituted in the alpha -position by an alkyl radical are obtained from the terminal olefins having one carbon atom less. To this end, the olefins are first isomerised in the presence of iron carbonyl and thereupon hydroformylated in the presence of rhodium as catalyst without removing the iron compound.

公开(公告)号：PL305157A1

公开(公告)日：1995-04-03

申请号：PL30515794

申请日：1994-09-23

Applicant: HOECHST AG

Inventor： BAHRMANN HELMUT ,  GREB WOLFGANG ,  DAEMBKES GEORG ,  HEYMANNS PETER ,  KALBFELL HEINZ ,  LAPPE PETER ,  SPRINGER HELMUT ,  VON MUELMANN EBERHARD ,  WEBER JUERGEN ,  WIEBUS ERNST ,  FROHNING CARL DIETER ,  KAPPESSER HARALD

IPC: C07B61/00 ,  C07C45/50 ,  B01J31/24 ,  C07C51/235 ,  C07C53/126 ,  C07C53/128 ,  C07C69/22 ,  C07C69/33 ,  C10M105/32 ,  C10M105/34 ,  C10M105/38 ,  C10M171/00 ,  C10N40/30 ,  C10N70/00

Abstract: Isomeric mixtures of pentanoic acids are prepared by subjecting butene-1/butene-2 mixtures to hydroformylation to form aldehyde mixtures, followed by oxidation of the aldehyde mixtures which have been separated off from the reaction product. The hydroformylation is carried out in a heterogeneous system in the presence of rhodium catalysts which are dissolved in water. The mixture of isomeric 5 carbon monocarboxylic acids produced, when esterified with polyhydric alcohols, yields mixtures of isomeric esters which are useful as lubricants for refrigerant compressors operated with chlorine-free, at least partly fluorinated hydrocarbons as the refrigerant.

公开(公告)号：CA1328886C

公开(公告)日：1994-04-26

申请号：CA578587

申请日：1988-09-27

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  LAPPE PETER ,  SPRINGER HELMUT

IPC: C07B61/00 ,  B01J27/02 ,  C07C67/08 ,  C07C69/003 ,  C07C69/24 ,  C07C69/78

Abstract: A process for the preparation of methyl carboxylates by the reaction of mono or dicarboxylic acids having more than 5 carbon atoms and methanol in the presence of acidic catalysts at temperatures from 100.degree. to 150.degree.C and below the boiling point of the carboxylates being produced.

公开(公告)号：HU207981B

公开(公告)日：1993-07-28

申请号：HU579390

申请日：1990-09-05

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  LAPPE PETER ,  SPRINGER HELMUT

IPC: B01J31/24 ,  B01J31/28 ,  C07B61/00 ,  C07C67/313 ,  C07C67/347 ,  C07C67/36 ,  C07C67/38 ,  C07C69/66 ,  C07C69/67

Abstract: The invention relates to a method for the production of methyl 2-formylbutyrate by hydroformylation of methyl crotonate in the presence of catalysts which contain rhodium and organic phosphines.

公开(公告)号：BR9201076A

公开(公告)日：1992-11-24

申请号：BR9201076

申请日：1992-03-27

Applicant: HOECHST AG

Inventor： LAPPE PETER DR ,  SPRINGER HELMUT

IPC: B01J31/24 ,  B01J31/40 ,  B01J38/00 ,  B01J38/58 ,  C07B61/00 ,  C07C45/50 ,  C07C47/02 ,  C07C67/313 ,  C07C69/716 ,  C22B11/00 ,  C01G55/00 ,  C07C27/22

Abstract: For the recovery of rhodium from the distillation residues of crude oxosynthesis products, the residue, or the feed material containing the residue, is treated with oxygen or an oxygen-containing gas in the presence of a monocarboxylic acid having 2 to 5 carbon atoms and of an alkali metal salt of a monocarboxylic acid having 2 to 5 carbon atoms. The rhodium is then extracted as a water-soluble compound with water.

公开(公告)号：AU6837090A

公开(公告)日：1991-06-27

申请号：AU6837090

申请日：1990-12-21

Applicant: HOECHST AG

Inventor： WEBER JURGEN DR ,  LAPPE PETER DR ,  SPRINGER HELMUT

IPC: B01J23/755 ,  C07B61/00 ,  C07C45/49 ,  C07C45/74 ,  C07C51/16 ,  C07C51/235 ,  C07C51/285 ,  C07C51/29 ,  C07C57/58 ,  C07C51/145

Abstract: The invention relates to a novel process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid from 4-chlorobenzaldehyde via the intermediates 3-(4-chlorophenyl)-2-methylpropenal, 3-(4-chlorophenyl)-2-methylpropanol, 1-(4-chlorophenyl)-2-methyl-1-propene and 2-(4-chlorophenyl)-2-methylbutyraldehyde.

公开(公告)号：CA2032360A1

公开(公告)日：1991-06-24

申请号：CA2032360

申请日：1990-12-14

Applicant: HOECHST AG

Inventor： WEBER JURGEN ,  LAPPE PETER ,  SPRINGER HELMUT

IPC: B01J23/755 ,  C07B61/00 ,  C07C45/49 ,  C07C45/74 ,  C07C51/16 ,  C07C51/235 ,  C07C51/285 ,  C07C51/29 ,  C07C57/58 ,  C07C51/145

Abstract: Hoechst Aktiengesellschaft, Frankfurt am Main 80 of the disclosure: The invention relates to a novel process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid from 4chlorobenzaldehyde by the intermediate stages 3-(4-chlorophenyl)-2-methylpropenal, 3-(4-chlorophenyl)-2-methylpropanol,1-(4-chlorophenyl) 2-methylprop-1-ene and 2-(4-chlorophenyl)-2-methylbutyraldehyde.

公开(公告)号：PL175826B1

公开(公告)日：1999-02-26

申请号：PL30633894

申请日：1994-12-16

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  SPRINGER HELMUT

IPC: B01J23/46 ,  B01J27/13 ,  B01J31/12 ,  B01J31/20 ,  C07B61/00 ,  C07C5/25 ,  C07C11/02 ,  C07C45/50 ,  C07C45/67 ,  C07C47/02

Abstract: Aldehydes having 8 to 17 carbon atoms in the molecule which are substituted in the alpha -position by an alkyl radical are obtained from the terminal olefins having one carbon atom less. To this end, the olefins are first isomerised in the presence of iron carbonyl and thereupon hydroformylated in the presence of rhodium as catalyst without removing the iron compound.