公开(公告)号：CA1286317C

公开(公告)日：1991-07-16

申请号：CA506740

申请日：1986-04-15

Applicant: HOECHST AG

Inventor： SEMLER GUENTHER ,  SCHAEFFER GEORG

IPC: C07C271/04 ,  C07C67/00 ,  C07C239/00 ,  C07C271/02

Abstract: Carbamoyl chlorides derived from secondary aliphatic amines having alkyl groups which are branched in the 1position are prepared by passing phosgene at an elevated temperature into the corresponding, initially taken - if appropriate dissolved in an inert solvent - secondary aliphatic amines having alkyl groups which are branched in the 1-position. The reaction products are intermediates in various specialized fields, particularly in the plant protection sector.

公开(公告)号：AU538329B2

公开(公告)日：1984-08-09

申请号：AU6627581

申请日：1981-01-16

Applicant: HOECHST AG

Inventor： SPIELMAN WERNER ,  SCHAEFFER GEORG

IPC: C07C59/52 ,  C07C51/00 ,  C07C51/377 ,  C07C67/00 ,  C07C59/48

Abstract: p-Hydroxyphenylacetic acid is prepared by reduction of p-hydroxymandelic acid with HI in the presence of red phosphorus. According to a preferred embodiment, the reaction is carried out in one vessel in which the mandelic acid is prepared in situ from phenol and glyoxylic acid.

公开(公告)号：AU530755B2

公开(公告)日：1983-07-28

申请号：AU5320579

申请日：1979-11-27

Applicant: HOECHST AG

Inventor： SPIELMANN WERNER ,  SCHAEFFER GEORG

IPC: C07C45/45 ,  C07C45/75 ,  C07C49/00 ,  C07C69/76 ,  C07D307/46 ,  C07D333/16 ,  C07D333/22 ,  C07C45/15

Abstract: Ketones are prepared by reacting carboxylic acid halides, in particular carboxylic acid chlorides, with aluminum-alkyl compounds, optionally in the presence of an aluminum trihalide, in methylene chloride as the solvent, at a temperature between about 20 DEG and about 100 DEG C., preferably between about 30 DEG and about 60 DEG C., more preferably of about 40 DEG C. which is the reflux temperature of the methylene chloride. When operating at a temperature above approximately 40 DEG C., pressure higher than atmospheric is applied. The reaction mixture is worked up in usual manner, suitably by decomposition with water followed by distillation.

公开(公告)号：DE2962101D1

公开(公告)日：1982-03-18

申请号：DE2962101

申请日：1979-11-13

Applicant: HOECHST AG

Inventor： LANDAUER FRANZ ,  SCHAEFFER GEORG

IPC: C07C22/04 ,  C07C25/02 ,  C07C25/13 ,  C07C45/43 ,  C07C45/80 ,  C07C45/85 ,  C07C47/542 ,  C07C47/55 ,  C07C63/06 ,  C07C21/24

公开(公告)号：DE2849692A1

公开(公告)日：1980-05-22

申请号：DE2849692

申请日：1978-11-16

Applicant: HOECHST AG

Inventor： LANDAUER FRANZ ,  SCHAEFFER GEORG

IPC: A61K31/18 ,  A61P9/00 ,  B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/14 ,  C07C22/04 ,  C07C25/02 ,  C07C25/13 ,  C07C45/00 ,  C07C45/43 ,  C07C45/80 ,  C07C45/82 ,  C07C45/85 ,  C07C47/542 ,  C07C47/55 ,  C07C67/00 ,  C07C25/14 ,  C07C47/52

公开(公告)号：CA1019763A

公开(公告)日：1977-10-25

申请号：CA197964

申请日：1974-04-22

Applicant: HOECHST AG

Inventor： SEMLER GUENTHER ,  SCHAEFFER GEORG ,  WALDMANN KARL

IPC: C07C53/38 ,  C07B61/00 ,  C07C51/00 ,  C07C51/60 ,  C07C55/36 ,  C07C57/64 ,  C07C63/00 ,  C07C67/00

公开(公告)号：CA891526A

公开(公告)日：1972-01-25

申请号：CA891526D

Applicant: HOECHST AG

Inventor： SCHAEFFER GEORG ,  KAPPENBERGER HELMUT ,  SCHUTTE HEINZ

公开(公告)号：DE2964310D1

公开(公告)日：1983-01-20

申请号：DE2964310

申请日：1979-11-13

Applicant: HOECHST AG

Inventor： LANDAUER FRANZ ,  SCHAEFFER GEORG

IPC: C07C22/04 ,  C07C25/02 ,  C07C25/13 ,  C07C45/43 ,  C07C45/80 ,  C07C45/85 ,  C07C47/542 ,  C07C47/55 ,  C07C63/06 ,  C07C21/24

公开(公告)号：CA1135276A

公开(公告)日：1982-11-09

申请号：CA363700

申请日：1980-10-31

Applicant: HOECHST AG

Inventor： SPIELMANN WERNER ,  SCHAEFFER GEORG

IPC: C07C69/614 ,  B01J23/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/377 ,  C07C57/32 ,  C07C57/58 ,  C07C59/52 ,  C07C59/64 ,  C07C67/00 ,  C07C69/73 ,  C07C69/76 ,  C07C227/00 ,  C07C227/16 ,  C07C229/42 ,  C07C231/00 ,  C07C231/12 ,  C07C235/42 ,  C07C59/11

Abstract: of the disclosure: Phenylacetic acid and the simple derivatives thereof are prepared by catalytic hydrogenation of mandelic acid and its appropriate derivatives in the presence of a noble metal catalyst in aqueous solution which is free from mineral acid, especially free from hydrochloric acid.

公开(公告)号：CA1133939A

公开(公告)日：1982-10-19

申请号：CA339937

申请日：1979-11-15

Applicant: HOECHST AG

Inventor： LANDAUER FRANZ ,  SCHAEFFER GEORG

IPC: C07C22/04 ,  C07C25/02 ,  C07C25/13 ,  C07C45/43 ,  C07C45/80 ,  C07C45/85 ,  C07C47/542 ,  C07C47/55 ,  C07C63/06

Abstract: p-tert.Butylbenzaldehyde and the derivatives thereof halogen-substituted at the nucleus are prepared by bromination of p-tert.butyltoluene and the derivatives thereof halogen-substituted at the nucleus under side chain halogenation conditions until the benzal bromine is obtained which is then saponified. Practically no indesired bromination at the nuclear or the tert.butyl group takes place. The products obtained are valued intermediates for the manufacture of pharmaceutical agents. plant protecting agents and dyestuffs.