公开(公告)号：CA2473936A1

公开(公告)日：2003-07-31

申请号：CA2473936

申请日：2003-01-20

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  NOEBEL THOMAS ,  BOTTKE NILS

IPC: C07C41/18 ,  B01J23/00 ,  B01J23/72 ,  B01J23/755 ,  B01J23/885 ,  B01J23/889 ,  C07B61/00 ,  C07C43/205 ,  C07C1/22

Abstract: The invention relates to a method for producing toluol derivatives of formul a (I), in which R1, R2, and R3 independently of one another represent hydrogen , halogen, C1-C6 alkyl, hydroxyl or C1-C6 alkoxy. Said derivatives are produce d by the hydrogenation of benzaldehydes and/or benzylalcohols of formula (II), IIa: X=CHO X=CH[OC1-C6 alkyl]2, IIb: X=CH2-OH X=CH2OC1-C6 alkyl with hydroge n in the presence of a catalyst, which is defined in more detail in the description.

公开(公告)号：DE19929831A1

公开(公告)日：2001-01-04

申请号：DE19929831

申请日：1999-06-30

Applicant: BASF AG

Inventor： STEIN FRANK ,  KRUG THOMAS ,  NOEBEL THOMAS ,  RUST HARALD

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C29/74

Abstract: The invention relates to a method for producing hexane diol-1,6 from a mixture of an adipic acid, 6-hydroxycapric acid and a carboxylic acid which contains small quantities of 1,4-cyclohexanediols which is obtained as a by-product during the oxidation of cyclohexane to cyclohexanon/cyclohexanol after the extraction of water from the reaction mixture by subsequent extraction, using aqueous caustic soda lye. The hexane diol-1,6 is produced by means of the esterification of the acids and hydrogenation. According to said method a) the carboxylic acids are liberated from the alkaline extract by the addition of a mineral acid, b) the organic phase which contains carboxylic acids is separated into a distillate which contains the low-molecular monocarboxylic acids and a residue which contains the adipic acid and 6-hydroxycapric acid, c) the mono and dicarboxylic acids, contained in the aqueous dicarboxylic acid mixture are reacted with a low-molecular alcohol into the corresponding carboxylic acid esters, d) superfluous alcohol and agents with a low-boiling point are liberated from the resultant esterification mixture in a first distillation stage, e) the residual product is separated in a second distillation stage into an ester fraction which is substantially devoid of 1,4-cyclohexanediols and a fraction which contains at least the greater part of the 1,4-cyclohexanediols, f) the ester fraction which is substantially devoid of 1,4-cyclohexandiols is catalytically hydrogenated and g) hexanediol-1,6 is obtained from the hydrogenation product in a pure distillation stage in the known manner.

公开(公告)号：ZA200406665B

公开(公告)日：2006-06-28

申请号：ZA200406665

申请日：2004-08-23

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  NOEBEL THOMAS

IPC: C07C41/18 ,  B01J20060101 ,  B01J23/00 ,  B01J23/72 ,  B01J23/755 ,  B01J23/885 ,  B01J23/889 ,  C07B61/00 ,  C07C20060101 ,  C07C43/205

Abstract: A process for preparing toluene derivatives of the formula I, where R 1 , R 2 and R 3 independently of one another are hydrogen, halogen, C 1 -C 6 -alkyl, hydroxyl or C 1 -C 6 -alkoxy, by hydrogenating benzaldehydes and/or benzyl alcohols of the formula II, with hydrogen in the presence of a catalyst, which is described in more detail in the description.

公开(公告)号：PL372164A1

公开(公告)日：2005-07-11

申请号：PL37216403

申请日：2003-01-20

Applicant: BASF AG

Inventor： BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  NOEBEL THOMAS ,  ROESCH MARKUS

IPC: C07C41/18 ,  B01J23/00 ,  B01J23/72 ,  B01J23/755 ,  B01J23/885 ,  B01J23/889 ,  C07B61/00 ,  C07C43/205 ,  C07C1/22

Abstract: A process for preparing toluene derivatives of the formula I, where R 1 , R 2 and R 3 independently of one another are hydrogen, halogen, C 1 -C 6 -alkyl, hydroxyl or C 1 -C 6 -alkoxy, by hydrogenating benzaldehydes and/or benzyl alcohols of the formula II, with hydrogen in the presence of a catalyst, which is described in more detail in the description.

公开(公告)号：AT261923T

公开(公告)日：2004-04-15

申请号：AT00949204

申请日：2000-06-21

Applicant: BASF AG

Inventor： STEIN FRANK ,  KRUG THOMAS ,  NOEBEL THOMAS ,  RUST HARALD

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20

Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.

公开(公告)号：DE10225339A1

公开(公告)日：2003-06-18

申请号：DE10225339

申请日：2002-06-06

Applicant: BASF AG

Inventor： ROESCH MARKUS ,  NOEBEL THOMAS ,  FISCHER ROLF-HARTMUTH

IPC: C07C51/36 ,  C07C67/303 ,  C07C51/50 ,  C07C53/122 ,  C07C67/62 ,  C07C69/22

Abstract: Production of propionic acid (and/or its ester) (I), by catalytic hydrogenation of acrylic acid (and/or its ester) (II), in the presence of a catalyst containing at least one Group 8-11 metal and/or its compound. Sulfur-containing compounds are added, with temperature control, to prevent catalyst poisoning. Production of propionic acid (and/or its ester) (I), by catalytic hydrogenation of acrylic acid (and/or its ester) (II) with molecular hydrogen in the gas or liquid phase in the presence of a catalyst containing at least one Group 8-11 metal and/or its compound, includes: (1) addition of sulfur-containing compound(s) (III) to (II); (2) adjustment of (II) to a working pressure P in the vapor phase; (3) adjustment of the temperature of (II) to a value between the b.pt. of (II) and the m.pt. of the highest melting compound (III), under a pressure P; and (4) hydrogenation of the vapor phase directly or after condensation.