公开(公告)号：DE2338929A1

公开(公告)日：1975-02-13

申请号：DE2338929

申请日：1973-08-01

Applicant: BASF AG

Inventor： MAIER KARL DR ,  HIMMELE WALTER DIPL-CHEM DR

IPC: C09B1/54 ,  C09B1/50

公开(公告)号：DE2340812A1

公开(公告)日：1975-02-27

申请号：DE2340812

申请日：1973-08-11

Applicant: BASF AG

Inventor： AQUILA WERNER DIPL-CHEM DR ,  HOFFMANN WERNER DIPL-CHEM DR ,  HIMMELE WALTER DIPL-CHEM DR ,  SIEGEL HARDO DIPL-CHEM DR

IPC: B01J31/20 ,  B01J31/24 ,  C07C45/49 ,  C07C45/50 ,  C07C47/228 ,  C07C47/235 ,  C07C47/24 ,  C07C47/277 ,  C11B9/00 ,  C07C45/10 ,  C07C47/48

公开(公告)号：DE2730720B1

公开(公告)日：1978-11-09

申请号：DE2730720

申请日：1977-07-07

Applicant: BASF AG

Inventor： EPPLE GERHARD DIPL-CHEM DR ,  ELSER WOLFGANG DIPL-CHEM DR ,  HIMMELE WALTER DIPL-CHEM DR

IPC: C07C225/36 ,  C07C97/26

Abstract: A process for the preparation of 1-amino-8-nitro-4,5-dihydroxyanthraquinone by partially reducing the corresponding dinitrohydroxyanthraquinone and isolating the reduction product, in which crude 1,8-dinitro-4,5-dihydroxyanthraquinone obtained by nitrating 4,5-dihydroxyanthraquinone is partially reduced in a phenol-water mixture, which contains from 5 to 50% by weight of water, in the presence of an alkali metal phenolate, by means of a reductone, reductonate or a mixture of these. The product is virtually free from by-products and is suitable for use for the synthesis of dyes.

公开(公告)号：DE2335437A1

公开(公告)日：1974-01-31

申请号：DE2335437

申请日：1973-07-12

Applicant: BASF AG

Inventor： AMANN AUGUST DR MED ,  SCHUSTER JOERG DR MED ,  GIERTZ HUBERT PROF DR MED ,  AQUILA WERNER DIPL-CHEM DR ,  HIMMELE WALTER DIPL-CHEM DR ,  SIEGEL HARDO DIPL-CHEM DR

IPC: C07D295/02 ,  C07D295/03 ,  C07D29/10

Abstract: N-(1-Indanylmethyl)-2,6-dimethylpiperidine, which can e.g. be prepd. by reacting 1-formyl-indane with 2,6-dimethylpiperidine and catalytically hydrogenating the resulting enamine, and its salts have hypotensive activity 5-10 times greater than that of the corresp. cpds. with only one or no methyl gp. in the piperidine ring.