公开(公告)号：DE59001006D1

公开(公告)日：1993-04-15

申请号：DE59001006

申请日：1990-09-10

Applicant: HOECHST AG

Inventor： WANZKE WOLFGANG DR ,  SIEGEMUND GUENTER DR ,  SCHMIEDER WILFRIED DR

IPC: B01J23/26 ,  C07B61/00 ,  C07C17/10 ,  C07C17/20 ,  C07C19/08

Abstract: The invention relates to a method for the production of 1,1,1,2-tetrafluoroethane from 1,1,1-trifluoro-2-chloroethane and hydrogen fluoride in the gas phase. This method makes use of a catalyst which contains chromium and magnesium and which can be obtained by precipitating chromium(III) hydroxide by reacting 1 mole of a water-soluble chromium(III) salt with at least 1.5 moles of magnesium hydroxide or magnesium oxide in the presence of water, converting the reaction mixture into a paste which contains chromium hydroxide and a magnesium salt, and then drying the paste and treating the product with hydrogen fluoride at temperatures of 20 to 500 DEG C.

公开(公告)号：DE3879113D1

公开(公告)日：1993-04-15

申请号：DE3879113

申请日：1988-11-17

Applicant: HOECHST AG

Inventor： ROEHRSCHEID FREIMUND DR ,  SIEGEMUND GUENTER DR ,  LAU JUERGEN DR

IPC: C07B61/00 ,  B01J31/04 ,  C07C51/265 ,  C07C51/60 ,  C07C65/24 ,  C07D307/89

Abstract: Partially fluorinated carboxylic acids of structure (I), their acid chlorides and anhydrides, are new. In formulae, R = H or -COOH (acid chloride with R = H only, anhydrides with R = -COOH only). Also claimed is a process for the prepn. of cpds. (I) and related cpds. of structure (II); where X = gp. of formulae (IIa) or (IIb); and their acid chlorid=s and anhydrides (defined as for I). The process entails oxidn. of the corresp. methyl cpds. by atmospheric O2 at high pressure in an acidic medium in the presence of a catalyst mixt. comprising heavy metal acetates in admixture with a bromide co-catalyst. The resulting carboxylic acids are elaborated to the corresp. derivs. by improved procedures .

公开(公告)号：DE4041256A1

公开(公告)日：1992-06-25

申请号：DE4041256

申请日：1990-12-21

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR ,  APPEL WOLFGANG K DR

IPC: C07C22/08

Abstract: Fluoroaromatic cpds. of formula (I) are new: where R1-R3 = 1-4C alkyl. USE - (I) are useful for prepn. of fluoro contg. polycondensates, e.g. polyamides, polyimides and polyesters.

公开(公告)号：DE3674048D1

公开(公告)日：1990-10-18

申请号：DE3674048

申请日：1986-04-10

Applicant: HOECHST AG

Inventor： FUSS ANDREAS DR ,  SIEGEMUND GUENTER DR

IPC: C07D207/34 ,  B01J27/00 ,  C07B61/00 ,  C07C67/00 ,  C07C241/00 ,  C07C253/00 ,  C07C255/61 ,  C07C257/02 ,  C07C257/04 ,  C07C325/00 ,  C07C327/38 ,  C07C327/58 ,  C07D207/32 ,  C07D207/335 ,  C07D213/53 ,  C07D213/65 ,  C07D213/69 ,  C07D213/81 ,  C07D213/82 ,  C07D277/74 ,  C07D295/13 ,  C07D307/68 ,  C07D333/22 ,  C07D333/38 ,  C07D521/00

Abstract: The invention relates to a process for the preparation of compounds of the formula I and salts or acid addition compounds thereof (I) in which R denotes hydrogen, (halogenated) alkyl with the exception of CF3, a (substituted) aromatic radical, (substituted) heteroaryl, (substituted) phenoxy, (substituted) phenylthio, (substituted) phenylamino, halogen, hydroxyl, alkoxy, mercapto, (halogenated) cycloalkyl, alkylmercapto, amino, monoalkylamino or dialkylamino, R1 denotes (substituted alkyl, (substituted) phenyl or naphthyl, alkenyl, alkinyl, cycloalkyl, (substituted) benzyl or heteroaryl, and X denotes oxygen or sulfur, which comprises reacting a nitrile of the formula II with a compound of the formula III R-C 3BOND N (II) R1-XH (III) in the presence of anhydrous hydrofluoric acid, a perfluoroalkanecarboxylic acid, a perfluoralkanesulfonic acid or a perfluorinated ion exchanger containing sulfonic acids, and converting the resulting salts of the formula I, if appropriate by the addition of bases, into the free imidates of the formula I and, if approximate, converting the latter subsequently into further salts or acid addition compounds. The invention also relates to the new compounds of the formula I in which R1 denotes a (substituted) phenyl radical and R and X have the meanings mentioned. The compounds of the formula I are valuable intermediate products in the preparation of plant protection agents and pharmaceuticals.

公开(公告)号：DE3764577D1

公开(公告)日：1990-10-04

申请号：DE3764577

申请日：1987-07-17

Applicant: HOECHST AG

Inventor： SCHNEIDER KLAUS-ALBERT DR ,  SIEGEMUND GUENTER DR

IPC: C07C63/331 ,  B01J23/26 ,  B01J23/72 ,  C07B61/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/06 ,  C07C201/08 ,  C07C201/12 ,  C07C205/06 ,  C07C205/07 ,  C07C205/11 ,  C07C205/12 ,  C07C205/58

Abstract: 2,2-Bis-(3-nitrophenyl)-hexafluoropropane is prepared by oxidation of 2,2-bis-(4-methylphenyl)-hexafluoropropane to 2,2-bis-(4-carboxyphenyl)-hexafluoropropane, nitration of this compound to 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane and decarboxylation of the last-mentioned compound. The process lends to 2,2-bis-(3-nitrophenyl)-hexafluoropropane, free of isomers, in an industrially simple manner and with the use of common chemicals. The compound is a valuable intermediate in the polymer field. The 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane occurring as an intermediate in the process is novel.

公开(公告)号：DE3739621A1

公开(公告)日：1989-06-01

申请号：DE3739621

申请日：1987-11-23

Applicant: HOECHST AG

Inventor： BUCHHOLZ RAINER DR ,  SCHAEFER HANS DR ,  SCHLINGMANN MERTEN DR ,  SIEGEMUND GUENTER DR ,  WALCH AXEL DR ,  WULLBRANDT DIETER DR

IPC: C12M3/02 ,  C12M1/00 ,  C12M1/04 ,  C12M1/08 ,  C12N1/00 ,  C12N5/10

公开(公告)号：DE3624913A1

公开(公告)日：1988-01-28

申请号：DE3624913

申请日：1986-07-23

Applicant: HOECHST AG

Inventor： SCHNEIDER KLAUS-ALBERT DR ,  SIEGEMUND GUENTER DR

IPC: C07C63/331 ,  B01J23/26 ,  B01J23/72 ,  C07B61/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/06 ,  C07C201/08 ,  C07C201/12 ,  C07C205/06 ,  C07C205/07 ,  C07C205/11 ,  C07C205/12 ,  C07C205/58 ,  C07C79/12 ,  C07C76/02 ,  C07C63/72 ,  C07C79/46

Abstract: 2,2-Bis-(3-nitrophenyl)-hexafluoropropane is prepared by oxidation of 2,2-bis-(4-methylphenyl)-hexafluoropropane to 2,2-bis-(4-carboxyphenyl)-hexafluoropropane, nitration of this compound to 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane and decarboxylation of the last-mentioned compound. The process lends to 2,2-bis-(3-nitrophenyl)-hexafluoropropane, free of isomers, in an industrially simple manner and with the use of common chemicals. The compound is a valuable intermediate in the polymer field. The 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane occurring as an intermediate in the process is novel.

公开(公告)号：DE3624814A1

公开(公告)日：1988-01-28

申请号：DE3624814

申请日：1986-07-23

Applicant: HOECHST AG

Inventor： SCHNEIDER KLAUS-ALBERT DR ,  SIEGEMUND GUENTER DR

IPC: C07B61/00 ,  C07C17/00 ,  C07C17/363 ,  C07C22/02 ,  C07C22/08 ,  C07C51/16 ,  C07C63/72 ,  C07C67/00 ,  C07C21/24

公开(公告)号：DE3237341A1

公开(公告)日：1984-04-12

申请号：DE3237341

申请日：1982-10-08

Applicant: HOECHST AG

Inventor： KELLER REINHOLD DR ,  SIEGEMUND GUENTER DR

IPC: C12N11/08 ,  C08F2/44 ,  C08F220/56 ,  C12N11/04 ,  C12N1/20 ,  C12N1/18

Abstract: Biocatalysts in bead form which contain microorganisms are particularly advantageously obtained by radical polymerization of acrylamide with methylene-bis-acrylamide in aqueous-organic phase suspension when the organic phase is a highly fluorinated carbon compound. The biocatalysts thus obtained have high stability and activity and are suitable for biotechnical processes.

公开(公告)号：DE3128119A1

公开(公告)日：1983-03-03

申请号：DE3128119

申请日：1981-07-16

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR ,  SCHWERTFEGER WERNER DR

IPC: C25B3/23 ,  C07C67/00 ,  C07C303/30 ,  C07C305/00 ,  C07C305/26 ,  C07C325/00 ,  C07C141/04

Abstract: What are disclosed are methods for making compounds of the formula FSO2-O-CF2-Rf-COY, useful as intermediates for making perfluorinated vinyl ethers, wherein Rf is a single bond or perfluoralkylene and Y is fluorine or -OR, by heating an alpha , omega -bis-fluorosulfatoperfluoroalkane of the formula FSO2-O-CF2-Rf-CF2-O-SO2F in the presence of an alkali metal fluoride and/or an alkali metal hydrogen fluoride and, when Y is OR, in the presence of an alkanol, ROH.