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：AT221060T

公开(公告)日：2002-08-15

申请号：AT99117240

申请日：1999-09-02

Applicant: BASF AG

Inventor： MAYWALD VOLKER DR ,  HARTMANN HORST ,  GOETZ NORBERT DR ,  REISSENWEBER GERNOT DR ,  KOENIG HARTMANN 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：AT125797T

公开(公告)日：1995-08-15

申请号：AT88108661

申请日：1988-05-31

Applicant: BASF AG

Inventor： MERKLE HANS RUPERT DR ,  MUELLER ALBRECHT DR ,  REISSENWEBER GERNOT DR

IPC: B01J27/08 ,  C07B61/00 ,  C07D215/04 ,  C07D215/18

Abstract: Quinolines are prepared by reaction of anilines with alpha , beta -unsaturated aldehydes or ketones in approximately 70 to 85 % by weight sulphuric acid in the presence of catalytic amounts of iodine at elevated temperature.

公开(公告)号：DE59102902D1

公开(公告)日：1994-10-20

申请号：DE59102902

申请日：1991-06-05

Applicant: BASF AG

Inventor： SCHAEFER BERND DR ,  FREUND WOLFGANG DR ,  REISSENWEBER GERNOT DR

IPC: C07C201/16 ,  C07C205/44

公开(公告)号：DE3936052A1

公开(公告)日：1991-05-02

申请号：DE3936052

申请日：1989-10-28

Applicant: BASF AG

Inventor： KRUG JOSEPH DR ,  REISSENWEBER GERNOT DR ,  KOOB KNUT DR

IPC: B01D61/36 ,  C07C41/34 ,  C07C41/36 ,  C07C43/13

Abstract: The process for separating a mixture of 1-methoxy-2-propanol and water is carried out by pervaporation.

公开(公告)号：DE3567655D1

公开(公告)日：1989-02-23

申请号：DE3567655

申请日：1985-07-16

Applicant: BASF AG

Inventor： SAUERWALD MANFRED DR ,  DOCKNER TONI DR ,  ROHR WOLFGANG DR ,  REISSENWEBER GERNOT DR

IPC: A01N43/18 ,  C07D335/02

Abstract: 5,6-Dihydro-2H-thiopyran-3-carboxaldehydes of the formula where R denotes hydrogen or methyl, are prepared by a method in which acrolein or crotonaldehyde is reacted with hydrogen sulfide in a mineral oil whose boiling point is higher than those of the starting materials and of the end product, and the 5,6-dihydro-2H-thiopyran-3-carboxaldehyde is obtained by distillation. These aldehydes are important intermediates for the preparation of some crop protection agents.

公开(公告)号：AT26979T

公开(公告)日：1987-05-15

申请号：AT84110797

申请日：1984-09-11

Applicant: BASF AG

Inventor： GOETZ NORBERT DR ,  JAHN DIETER DR ,  REISSENWEBER GERNOT DR ,  ECKHARDT HEINZ DR

IPC: B01J23/00 ,  B01J23/40 ,  B01J23/50 ,  C07B61/00 ,  C07D335/02

公开(公告)号：DE3428837A1

公开(公告)日：1986-01-09

申请号：DE3428837

申请日：1984-08-04

Applicant: BASF AG

Inventor： MERKLE HANS DR ,  MUELLER ALBRECHT DR ,  HAMPRECHT GERHARD DR ,  REISSENWEBER GERNOT DR

IPC: C07D213/80 ,  C07C20060101 ,  C07C7/10 ,  C07C67/00 ,  C07C301/00 ,  C07C303/34 ,  C07C307/10 ,  C07D20060101 ,  C07D213/42 ,  C07D213/75 ,  C07D213/76 ,  C07D213/81 ,  C07D285/16 ,  C07D513/04 ,  C07C143/86

Abstract: A process for the preparation of N-phenyl(pyridyl)sulfonyldiamides by reacting a 2-aminobenzoic acid (nicotinic acid) derivative with sulfur trioxide, chlorosulfonic acid or an adduct of sulfur trioxide with a tertiary amine in the presence of a diluent and of a tertiary amine, and reacting the resulting sulfamate with a primary amine and a phosphorus halide, or by reacting a 2-aminobenzoic acid (nicotinic acid) derivatives with an N-alkyl(cycloalkyl)sulfamic acid or a salt of this acid in the presence of a diluent and of a phosphorus halide.

公开(公告)号：DE3854245D1

公开(公告)日：1995-09-07

申请号：DE3854245

申请日：1988-05-31

Applicant: BASF AG

Inventor： MERKLE HANS RUPERT DR ,  MUELLER ALBRECHT DR ,  REISSENWEBER GERNOT DR

IPC: B01J27/08 ,  C07B61/00 ,  C07D215/04 ,  C07D215/18

Abstract: Quinolines are prepared by reaction of anilines with alpha , beta -unsaturated aldehydes or ketones in approximately 70 to 85 % by weight sulphuric acid in the presence of catalytic amounts of iodine at elevated temperature.

公开(公告)号：DE4037840A1

公开(公告)日：1992-06-11

申请号：DE4037840

申请日：1990-11-28

Applicant: BASF AG

Inventor： RUEB LOTHAR DR ,  EICKEN KARL DR ,  SCHAEFER BERND DR ,  REISSENWEBER GERNOT DR ,  SCHAEFER PETER DR

IPC: C07C205/56 ,  C07C229/40 ,  C07C229/44 ,  C07D209/48

Abstract: The invention concerns the preparation of 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) (R = H, halogen; R , R = halogen; R = C-organic rest; R = H, CH3) by the reduction of 3-nitrocinnamic acid esters of formula (II) with hydrogen in the presence of a catalyst and the condensation of the 3-aminocinnamic acid esters obtained of formula (III) with a 3,4,5,6-tetrahydrophthalic acid anhydride of formula (IV). 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) are useful active agents in the plant-protection field.