公开(公告)号：JP2000154183A

公开(公告)日：2000-06-06

申请号：JP29724899

申请日：1999-09-10

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  HARTMANN HORST ,  GOETZ NORBERT ,  REISSENWEBER GERNOT DR ,  KOENIG HARTMANN

IPC: C07D307/33 ,  C07D407/04

Abstract: PROBLEM TO BE SOLVED: To provide a method for removing impurities from 3-(2'-acetoxyethyl)- dihydroxyethyl)dihydro-2(3H)furanone. SOLUTION: In this method, 3-(2'-hydroxyethyl)dihydro-2(3H)furanone including impurities is subjected to plural distillations or purifications and high boiling point impurities are removed, then a product taken out from the top part is subjected to at least other one process, thus a low boiling point component and a middle boiling point component are removed from the top part to obtain pure 3-(2'-hydroxyethyl)dihydro-2(3H)furanone (I) as a column bottom product.

公开(公告)号：HU225876B1

公开(公告)日：2007-11-28

申请号：HU0200621

申请日：2000-02-28

Applicant: BASF AG

Inventor： HEIMANN FRANK DR ,  PESCHEL WERNER ,  BARTENBACH BERND ,  HARTMANN HORST ,  KEIL MICHAEL DR ,  WAHL JOSEF

IPC: B01D3/14 ,  C07C239/20 ,  B01D3/20

Abstract: The present invention relates to a process for the continuous preparation of methoxyamine hydrochloride by cleavage of acetone oxime methyl ether by means of hydrogen chloride and water, wherein the cleavage is carried out in a reaction column having less than 20 theoretical plates and the amount taken off at the top is set to at least 30% of the amount of feed.

公开(公告)号：AT364431T

公开(公告)日：2007-07-15

申请号：AT01103686

申请日：2001-02-23

Applicant: BASF AG

Inventor： BURST WOLFRAM ,  HARTMANN HORST ,  KAIBEL GERD ,  HARMS GUIDO

IPC: B01D3/14

公开(公告)号：DE59611228D1

公开(公告)日：2005-06-16

申请号：DE59611228

申请日：1996-06-29

Applicant: BASF AG

Inventor： HARTMANN HORST ,  BURST WOLFRAM ,  KAISER DR ,  LAAS DR ,  GRAFEN DR ,  BOCKSTIEGEL DR ,  BALDENIUS DR

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  B01D3/16 ,  B01D3/26 ,  B01D3/32 ,  B01J19/32 ,  C07C17/38 ,  C07D311/72

Abstract: Process to rectify mixts. of high-boiling air and / or temp. sensitive substances requiring a high sepn. efficiency. Process is carried out in a fine vacuum (pref. 0.1-2 mbar) in columns contg. metal fabric packing of an ordered structure. The liq. distribution is carried out by channel distributors with at least 500 drainage points per square metre. The distributor channels are arranged at around 90 degrees to the fabric layers of the packing elements directly under these distributors. Two or more packing elements of height 20-100 mm are inserted below the distributor, whose fabric layers are turned at around 90 degrees to each other. The process is run in the complete absence of air and the rectification is operated strictly adiabatically. Also claimed are columns with output and enhancement sections contg. metal fabric packing for the above process.

公开(公告)号：DE59902100D1

公开(公告)日：2002-08-29

申请号：DE59902100

申请日：1999-09-02

Applicant: BASF AG

Inventor： MAYWALD DR ,  HARTMANN HORST ,  GOETZ DR ,  REISSENWEBER DR ,  KOENIG DR

IPC: C07D307/33 ,  C07D407/04

Abstract: Separation of impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I) obtained by acetylation of 3-(2'-hydroxyethyl)-dihydro-2(3H)-furanone comprises first separating high boiling impurities and subjecting the recovered distillation head product to a further step in which light and medium boiling components are taken off at the head and recovering pure (I) as the sump product.

公开(公告)号：PL341099A1

公开(公告)日：2001-03-26

申请号：PL34109998

申请日：1998-12-02

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  GOETZ NORBERT ,  KUEKENHOEHNER THOMAS ,  BORCHERS DIRK ,  KOENIG HARTMANN ,  HARTMANN HORST ,  WAGNER RUPERT

IPC: C07D307/32 ,  C07D307/33 ,  C07D407/04

Abstract: A process for removing impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I), which comprises initially preparing the 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone containing the undesirable impurities in a manner known per se by acetylating 3-(2'-hydroxylethyl)-dihydro-2(3H)-furanone, subsequently treating it with strong mineral acids and finally removing the decomposition products of the undesirable impurities from I.

公开(公告)号：SK6352000A3

公开(公告)日：2001-02-12

申请号：SK6352000

申请日：1998-12-02

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  GOTZ NORBERT ,  KUKENHOHNER THOMAS ,  BORCHERS DIRK ,  KONIG HARTMANN ,  HARTMANN HORST ,  WAGNER RUPERT

IPC: C07D307/32 ,  C07D307/33 ,  C07D407/04

Abstract: A process for removing impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I), which comprises initially preparing the 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone containing the undesirable impurities in a manner known per se by acetylating 3-(2'-hydroxylethyl)-dihydro-2(3H)-furanone, subsequently treating it with strong mineral acids and finally removing the decomposition products of the undesirable impurities from I.

公开(公告)号：ES2137510T3

公开(公告)日：1999-12-16

申请号：ES95917966

申请日：1995-04-26

Applicant: BASF AG

Inventor： RANG HARALD ,  GOTZ NORBERT ,  HARREUS ALBRECHT ,  BORCHERS DIRK ,  HARTMANN HORST ,  MAYWALD VOLKER

IPC: B01J23/02 ,  B01J31/02 ,  C07B61/00 ,  C07C239/20 ,  C07C249/12 ,  C07C251/54 ,  C07C309/66

Abstract: PCT No. PCT/EP95/01581 Sec. 371 Date Nov. 4, 1996 Sec. 102(e) Date Nov. 4, 1996 PCT Filed Apr. 26, 1995 PCT Pub. No. WO95/30648 PCT Pub. Date Nov. 16, 1995Preparation of mixtures of O-phenoxyalkylhydroxylamines Ia and Ib (Ia): H2NOCH2CH(R1)OAr (Ib): H2NOCH(R1)CH2OAr and the corresponding salt mixtures by a) converting mixtures of isomers of O-(2-hydroxyethyl)oximes IIa and IIb (IIa): (III): into a mixture of sulfonates IVa and IVb (IVa): (IVb): b) reacting this mixture of IVa and IVb with a phenol HO-Ar (V) to give a mixture of O-phenoxyalkoximes VIa and VIb (VIa): (VIb): c) hydrolyzing this mixture in the presence of an acid and, if desired d) liberating the O-phenoxyalkylhydroxylamines Ia and Ib from the resulting salts using a mineral acid. Compounds Ia/Ib and VIa/VIb are important intermediates for crop protection agents.

公开(公告)号：DE59507102D1

公开(公告)日：1999-11-25

申请号：DE59507102

申请日：1995-04-26

Applicant: BASF AG

Inventor： RANG HARALD ,  GOETZ NORBERT ,  HARREUS ALBRECHT ,  BORCHERS DIRK ,  HARTMANN HORST ,  MAYWALD VOLKER ,  HEIMANN FRANK ,  BUSCHULTE THOMAS

IPC: B01J23/02 ,  B01J31/02 ,  C07B61/00 ,  C07C239/20 ,  C07C249/12 ,  C07C251/54 ,  C07C309/66

Abstract: PCT No. PCT/EP95/01581 Sec. 371 Date Nov. 4, 1996 Sec. 102(e) Date Nov. 4, 1996 PCT Filed Apr. 26, 1995 PCT Pub. No. WO95/30648 PCT Pub. Date Nov. 16, 1995Preparation of mixtures of O-phenoxyalkylhydroxylamines Ia and Ib (Ia): H2NOCH2CH(R1)OAr (Ib): H2NOCH(R1)CH2OAr and the corresponding salt mixtures by a) converting mixtures of isomers of O-(2-hydroxyethyl)oximes IIa and IIb (IIa): (III): into a mixture of sulfonates IVa and IVb (IVa): (IVb): b) reacting this mixture of IVa and IVb with a phenol HO-Ar (V) to give a mixture of O-phenoxyalkoximes VIa and VIb (VIa): (VIb): c) hydrolyzing this mixture in the presence of an acid and, if desired d) liberating the O-phenoxyalkylhydroxylamines Ia and Ib from the resulting salts using a mineral acid. Compounds Ia/Ib and VIa/VIb are important intermediates for crop protection agents.

公开(公告)号：DE69512786D1

公开(公告)日：1999-11-18

申请号：DE69512786

申请日：1995-07-28

Applicant: BASF AG

Inventor： HARREUS ALBRECHT ,  GOETZ NORBERT ,  RANG HARALD ,  HARTMANN HORST ,  MOHR JUERGEN ,  GEHRER EUGEN ,  LAUTH GUENTER

IPC: B01J31/02 ,  C07B61/00 ,  C07C249/12 ,  C07C251/38 ,  C07C251/44 ,  C07C251/54

Abstract: Preparation of O-(2-hydroxyalkyl) oximes of formula (I), (R and R are alkyl or R and R and the common C atom are 5-membered to 7-membered cycloalkyl; R is alkyl) by causing a ketoxime II to react with an olefin oxide III in the presence of a tertiary amine or with a carbonate IV in the presence of a catalyst. The end products (I) are suitable for use as intermediates for crop protection agents.