公开(公告)号：DE59307113D1

公开(公告)日：1997-09-18

申请号：DE59307113

申请日：1993-11-19

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  FOLZ GEORG DR

IPC: B01J27/053 ,  B01J27/06 ,  B01J27/18 ,  B01J27/25 ,  C07B61/00 ,  C07C45/42 ,  C07C45/43 ,  C07C47/54 ,  C07C47/55

Abstract: Process for the continuous preparation of aromatic aldehydes of the general formula (1) in which Ar is an aryl radical having 6 to 14 carbon atoms and R , R and R independently of one another are hydrogen, fluorine, chlorine or bromine atoms, by continuously hydrolysing a dichloromethyl-substituted aromatic compound of the general formula (2) in which Ar, R , R and R have the abovementioned meanings, with an aqueous solution of one or more catalysts of the general formula (3> MXn (3> in which M is a transition metal from the series comprising iron, nickel, copper, chromium, thallium, zinc and mercury, X is F, Cl, Br, I, OH, SO4, PO4 or NO3 and n, depending on the level of oxidation of the transition metal M, is the number 1, 2, 3 or 4, of a concentration of approximately 1 to approximately 50%, based on the weight of water of the catalyst solution, at temperatures from approximately 70@ to approximately 160@C.

公开(公告)号：CZ282094A3

公开(公告)日：1995-06-14

申请号：CZ282094

申请日：1994-11-16

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  TRONICH WOLFGANG DR

IPC: C07D239/96 ,  C07B37/10 ,  C07C67/14 ,  C07C69/62 ,  C07C69/78 ,  C07C275/42

Abstract: Process for the preparation of alkyl fluorobenzoates of the general formula (I) in which R represents an alkyl radical and Fn represents 1 to 4 fluorine atoms which, independently of one another, are bonded to the aromatic ring, by reacting a fluorobenzoyl chloride of the general formula (II) in which Fn has the above-defined meaning with an at least stoichiometric amount of an alkali metal alcoholate ROM in which R has the above-defined meaning and M represents an alkali metal from the group consisting of Li, Na and K, in the corresponding alcohol ROH at temperatures from -10 DEG C to 150 DEG C, if appropriate distilling off the solvent, and removing the alkali metal chloride formed by treating the mixture with water or by filtration.

公开(公告)号：DE59307115D1

公开(公告)日：1997-09-18

申请号：DE59307115

申请日：1993-11-22

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  BURG PETER

IPC: C07B61/00 ,  C07C45/43 ,  C07C47/54 ,  C07C47/55

Abstract: Process for the preparation of aromatic aldehydes of the general formula (1) in which R , R and R independently of one another are H, F, Cl or Br, by hydrolysing a dichloromethyl-substituted benzene of the general formula (2) in which R , R and R have the abovementioned meanings, with an approximately 1 to approximately 50% strength aqueous solution of one or more zinc salts of the general formula (3> ZnXn (3> in which X is F, Cl, Br, I, OH or SO4 and n, depending on the anion X, is the number 1 or 2, at temperatures from approximately 70 to approximately 160@C.

公开(公告)号：DE4426575A1

公开(公告)日：1996-02-01

申请号：DE4426575

申请日：1994-07-27

Applicant: HOECHST AG

Inventor： MEIER MICHAEL DR ,  PRESLER WILFRIED DR ,  BILLEB GILBERT DR

IPC: B01J27/125 ,  B01J31/02 ,  C07B61/00 ,  C07C45/46 ,  C07C49/807 ,  C07C49/167

公开(公告)号：DE59404088D1

公开(公告)日：1997-10-23

申请号：DE59404088

申请日：1994-11-03

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  TRONICH WOLFGANG DR

IPC: C07D239/96 ,  C07B37/10 ,  C07C67/14 ,  C07C69/62 ,  C07C69/78 ,  C07C275/42

Abstract: Process for the preparation of alkyl fluorobenzoates of the general formula (I) in which R represents an alkyl radical and Fn represents 1 to 4 fluorine atoms which, independently of one another, are bonded to the aromatic ring, by reacting a fluorobenzoyl chloride of the general formula (II) in which Fn has the above-defined meaning with an at least stoichiometric amount of an alkali metal alcoholate ROM in which R has the above-defined meaning and M represents an alkali metal from the group consisting of Li, Na and K, in the corresponding alcohol ROH at temperatures from -10 DEG C to 150 DEG C, if appropriate distilling off the solvent, and removing the alkali metal chloride formed by treating the mixture with water or by filtration.

公开(公告)号：CZ9402820A3

公开(公告)日：1995-06-14

申请号：CZ282094

申请日：1994-11-16

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  TRONICH WOLFGANG DR

IPC: C07D239/96 ,  C07B37/10 ,  C07C67/14 ,  C07C69/62 ,  C07C69/78 ,  C07C275/42

CPC classification number: C07C67/14 ,  C07C69/76

公开(公告)号：ES2108192T3

公开(公告)日：1997-12-16

申请号：ES93118754

申请日：1993-11-22

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  BURG PETER

IPC: C07B61/00 ,  C07C45/43 ,  C07C47/54 ,  C07C47/55

Abstract: Process for the preparation of aromatic aldehydes of the general formula (1) in which R , R and R independently of one another are H, F, Cl or Br, by hydrolysing a dichloromethyl-substituted benzene of the general formula (2) in which R , R and R have the abovementioned meanings, with an approximately 1 to approximately 50% strength aqueous solution of one or more zinc salts of the general formula (3> ZnXn (3> in which X is F, Cl, Br, I, OH or SO4 and n, depending on the anion X, is the number 1 or 2, at temperatures from approximately 70 to approximately 160@C.

公开(公告)号：ES2108191T3

公开(公告)日：1997-12-16

申请号：ES93118646

申请日：1993-11-19

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  FOLZ GEORG DR

IPC: B01J27/053 ,  B01J27/06 ,  B01J27/18 ,  B01J27/25 ,  C07B61/00 ,  C07C45/42 ,  C07C45/43 ,  C07C47/54 ,  C07C47/55

Abstract: Process for the continuous preparation of aromatic aldehydes of the general formula (1) in which Ar is an aryl radical having 6 to 14 carbon atoms and R , R and R independently of one another are hydrogen, fluorine, chlorine or bromine atoms, by continuously hydrolysing a dichloromethyl-substituted aromatic compound of the general formula (2) in which Ar, R , R and R have the abovementioned meanings, with an aqueous solution of one or more catalysts of the general formula (3> MXn (3> in which M is a transition metal from the series comprising iron, nickel, copper, chromium, thallium, zinc and mercury, X is F, Cl, Br, I, OH, SO4, PO4 or NO3 and n, depending on the level of oxidation of the transition metal M, is the number 1, 2, 3 or 4, of a concentration of approximately 1 to approximately 50%, based on the weight of water of the catalyst solution, at temperatures from approximately 70@ to approximately 160@C.

公开(公告)号：DE59303468D1

公开(公告)日：1996-09-26

申请号：DE59303468

申请日：1993-05-04

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  SEMLER GUENTHER DR

IPC: C07C209/90 ,  C07C211/05 ,  C07C211/07 ,  C07C211/27 ,  C07C211/35 ,  C07C211/45 ,  C07C211/52

Abstract: Without added stabilisers, aminobenzotrifluorides have a low heat and storage stability. The present invention relates to preparations of a stabilised aminobenzotrifluoride, consisting essentially of a) an aminobenzotrifluoride of the formula (I) in which R and R independently of one another denote hydrogen, C1-C6-alkyl, C2-C6-alkenyl, substituted or unsubstituted aryl, halogen, CF3, nitro, amino, methoxy, hydroxyl or NR R , where R and R independently of one another represent hydrogen or C1-C5-alkyl radicals, and the NH2 group can be in the 2-, 3- or 4-position relative to the CF3 group and b) at least one base. en

公开(公告)号：DE4339208A1

公开(公告)日：1995-05-18

申请号：DE4339208

申请日：1993-11-17

Applicant: HOECHST AG

Inventor： BILLEB GILBERT DR ,  TRONICH WOLFGANG DR

IPC: C07D239/96 ,  C07B37/10 ,  C07C67/14 ,  C07C69/62 ,  C07C69/78 ,  C07C275/42

Abstract: Process for the preparation of alkyl fluorobenzoates of the general formula (I) in which R represents an alkyl radical and Fn represents 1 to 4 fluorine atoms which, independently of one another, are bonded to the aromatic ring, by reacting a fluorobenzoyl chloride of the general formula (II) in which Fn has the above-defined meaning with an at least stoichiometric amount of an alkali metal alcoholate ROM in which R has the above-defined meaning and M represents an alkali metal from the group consisting of Li, Na and K, in the corresponding alcohol ROH at temperatures from -10 DEG C to 150 DEG C, if appropriate distilling off the solvent, and removing the alkali metal chloride formed by treating the mixture with water or by filtration.