公开(公告)号：JPS5572128A

公开(公告)日：1980-05-30

申请号：JP14717179

申请日：1979-11-15

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

公开(公告)号：JPS5916837A

公开(公告)日：1984-01-28

申请号：JP8186683

申请日：1983-05-12

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

CPC classification number: C07C22/04 ,  C07C17/14 ,  C07C25/02 ,  C07C25/13 ,  C07C45/43 ,  C07C45/80 ,  C07C45/82 ,  C07C45/85 ,  C07C47/55

公开(公告)号：MX149164A

公开(公告)日：1983-09-08

申请号：MX18022779

申请日：1979-11-28

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 ,  C07C49/76

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：CA1004690A

公开(公告)日：1977-02-01

申请号：CA162939

申请日：1973-01-30

Applicant: HOECHST AG

Inventor： PIETZSCH SIEGFRIED ,  SCHAEFFER GEORG

IPC: C07C37/70 ,  C07C27/00 ,  C07C37/72 ,  C07C39/12 ,  C07C39/14 ,  C07C39/15 ,  C07C39/27 ,  C07C67/00

Abstract: Arylhydroxy compounds and aqueous alkali metal hydroxide solutions are separated and isolated from aqueous solutions of alkali metal arylates by extracting at a temperature of from 15 DEG to 150 DEG C. an aqueous solution containing the alkali metal arylate with a ketone immiscible or incompletely miscible with water at room temperature, separating the organic phase from the aqueous phase containing the alkali metal hydroxide, and isolating the free arylhydroxy compound from the organic phase by removing the ketone used as solvent.

公开(公告)号：CA1001660A

公开(公告)日：1976-12-14

申请号：CA187724

申请日：1973-12-07

Applicant: HOECHST AG

Inventor： TOPP ALWIN ,  SCHAEFFER GEORG

IPC: C07C27/00 ,  C07C37/72 ,  C07C39/08 ,  C07C67/00

公开(公告)号：CA960695A

公开(公告)日：1975-01-07

申请号：CA131116

申请日：1971-12-24

Applicant: HOECHST AG

Inventor： SCHUTTE HEINZ ,  SCHAEFFER GEORG

IPC: C07C45/41

公开(公告)号：AU4381772A

公开(公告)日：1974-01-03

申请号：AU4381772

申请日：1972-06-23

Applicant: HOECHST AG

Inventor： SEMLER GUNTHER ,  SCHAEFFER GEORG

IPC: C07C69/00 ,  C07C68/02 ,  C07C69/96 ,  C07D317/70 ,  C07D319/08 ,  C07D13/10 ,  C07C69/64

公开(公告)号：CA863981A

公开(公告)日：1971-02-16

申请号：CA863981D

Applicant: HOECHST AG

Inventor： OTTEN JOACHIM ,  SCHAEFFER GEORG

公开(公告)号：CA659699A

公开(公告)日：1963-03-19

申请号：CA659699D

Applicant: HOECHST AG

Inventor： SCHAEFFER GEORG

公开(公告)号：CA1287633C

公开(公告)日：1991-08-13

申请号：CA499398

申请日：1986-01-10

Applicant: HOECHST AG

Inventor： PLANKER SIEGFRIED ,  WARNING KLAUS ,  HERBST HORST ,  SCHAEFFER GEORG

IPC: C07D213/73 ,  C07D213/74 ,  C07D213/75 ,  C07D213/76

Abstract: 2-Nitro-3-aminopyridine is prepared by nitrating N,N'-di- (3-pyridyl)-urea, with subsequent hydrolysis. N,N'-Di-(2-nitro-3-pyridyl)-urea, which is formed in the course of the reaction as an intermediate, is a new compound. The end product of the process, 2-nitro-3-aminopyridine, is principally an intermediate in various specialized fields, for example, in the pharmaceutical, dyestuff and plant protection sectors.