公开(公告)号：US3446721A

公开(公告)日：1969-05-27

申请号：US3446721D

申请日：1966-07-22

Applicant: HOECHST AG

Inventor： SCHERER OTTO ,  KORINTH JURGEN ,  RAMMELT PETER-PAUL

IPC: C07C51/25 ,  C07C51/58 ,  C07C53/16 ,  B01J1/10 ,  C07C51/32

CPC classification number: C07C51/25 ,  C07C51/58 ,  C07C53/18 ,  C07C53/48

公开(公告)号：CA808168A

公开(公告)日：1969-03-11

申请号：CA808168D

Applicant: HOECHST AG

Inventor： SCHERER OTTO ,  KORINTH JURGEN ,  RAMMELT PETER-PAUL

公开(公告)号：CA1002065A

公开(公告)日：1976-12-21

申请号：CA161977

申请日：1973-01-24

Applicant: HOECHST AG

Inventor： RAMMELT PETER-PAUL ,  SIEGEMUND GUENTER

IPC: C07C53/48 ,  B01J27/00 ,  C07B61/00 ,  C07C17/20 ,  C07C51/00 ,  C07C51/58 ,  C07C67/00

Abstract: 1383145 Trifluoroacetyl chloride HOECHST AG 24 Jan 1973 [25 Jan 1972] 3540/73 Heading C2C Trifluoroacetyl chloride is prepared by passing a gaseous mixture of CF 3 COF, a chlorohydrocarbon which is capable of being fluorinated, HCl and, if desired, HF over a chromium oxyfluoride catalyst at a temperature of 100- 350‹ C. and isolating the CF 3 COCl from the reaction mixture. Preferably the gaseous mixture contains 0À5-5 moles of the chlorohydrocarbon calculated on the sum of the molar quantities of CF 3 COF and HF in the mixture. The chlorohydrocarbon preferably has 1 to 3 C atoms and at least two Cl atoms bonded to one carbon atom, e.g. CCl 4 . The preferred temperature range is 170-250‹ C.

公开(公告)号：CA1181096A

公开(公告)日：1985-01-15

申请号：CA391997

申请日：1981-12-10

Applicant: HOECHST AG

Inventor： RAMMELT PETER-PAUL ,  SIEGEMUND GUENTER

IPC: C07C49/167 ,  B01J27/00 ,  B01J27/12 ,  C07B61/00 ,  C07C37/20 ,  C07C39/367 ,  C07C45/00 ,  C07C45/58 ,  C07C67/00

Abstract: of the disclosure: Hexafluoroacetone is prepared by a rearrangement of hexafluoropropene epoxide at an elevated temperature in the presence of hydrogen fluoride as a catalyst and, if appropriate, also as a solvent. In many cases the solution of hexafluoroacetone in hydrogen fluoride obtained in this process can be directly employed without further working-up or purification in further reactions of hexafluoroacetone, for example with phenol and/or o-cresol.