公开(公告)号：US3558627A

公开(公告)日：1971-01-26

申请号：US3558627D

申请日：1967-09-29

Applicant: HOECHST AG

Inventor： SCHERER OTTO ,  KLUGE FRIEDHELM

IPC: C07D239/54 ,  C07D239/557 ,  C07D51/30

CPC classification number: C07D239/557

Abstract: 6-AMINO-URACIL-5-CARBONAMIDO-N-SULFONAMIDES HAVING DIURETIC ACTIVITY AND PROCESS FOR THEIR PREPARATION.

公开(公告)号：CA1060482A

公开(公告)日：1979-08-14

申请号：CA238542

申请日：1975-10-29

Applicant: HOECHST AG

Inventor： VON HALASZ SIGMAR-PETER ,  KLUGE FRIEDHELM

IPC: C07C43/12 ,  C08G65/323

Abstract: PROCESS FOR PREPARING PERFLUORINATED ETHERS Perfluorinated ethers containing carboxylic acid fluoride groups and optionally units derived from hexafluoropropene epoxide or tetrafluoroethylene epoxide are reacted with fluorine at temperatures of from 50 to 350.degree.C in the presence of metallic catalysts. During the reaction carbonyl difluoride is splitt off and an ether is obtained in high yield which is free of carboxylic acid fluoride groups. Metallic silver is well suited as catalyst.

公开(公告)号：CA1049048A

公开(公告)日：1979-02-20

申请号：CA206865

申请日：1974-08-09

Applicant: HOECHST AG

Inventor： KUHN HEINRICH ,  KLUGE FRIEDHELM ,  SIEGEMUND GUNTER

IPC: C07C41/00 ,  C07C43/12 ,  C07C67/00

Abstract: PROCESS FOR THE PREPARATION OF 1-CHLORO-2,2,2-TRIFLUORO- ETHYLDIFLUOROMETHYL ETHER of the disclosure: Process for the preparation of 1-chloro-2,2,2-trifluoro-ethyl-difluoromethyl ether by reacting 1-chloro-2,2,2-tri-fluoroethyl-methyl ether with elementary chlorine and fluorinating the resulting 1-chloro-2,2,2-trifluoroethyl-dichloro-methyl ether.

公开(公告)号：CA1086756A

公开(公告)日：1980-09-30

申请号：CA289210

申请日：1977-10-21

Applicant: HOECHST AG

Inventor： MARTINI THOMAS ,  KLUGE FRIEDHELM

IPC: C07C45/48 ,  C07D319/12 ,  C07C49/04

Abstract: of the disclosure: Perfluorocarboxylic acid salts of a monovalent metal are reacted with perfluorocarboxylic acid fluorides in aprotic polar solvents. Perfluoroketones are obtained. The salt of the perfluorocarboxylic acid can be replaced by alkali metal salts of formic acid, oxalic acid or of oxygencontaining mineral acids, the central atom of which is an clement of the groups IIIA to VIIA of the periodic table and which mineral acid is weaker than trifluoroacetic acid. The same result is obtained if the anhydride of the perfluorocarboxylic acid is contacted with an alkali metal fluoride. The synthesized perfluoroketones are liquids of high chemical and thermal stability.

公开(公告)号：CA866822A

公开(公告)日：1971-03-23

申请号：CA866822D

Applicant: HOECHST AG

Inventor： SCHERER OTTO ,  KLUGE FRIEDHELM

公开(公告)号：CA820931A

公开(公告)日：1969-08-19

申请号：CA820931D

Applicant: HOECHST AG

Inventor： SCHERER OTTO ,  KLUGE FRIEDHELM ,  SCHAEFFER GEORG