公开(公告)号：DE59303217D1

公开(公告)日：1996-08-22

申请号：DE59303217

申请日：1993-02-08

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR

IPC: C07C319/14 ,  C07C323/22 ,  C07D333/54

Abstract: Process for the preparation of benzo[b]thiophenes of the general formula I in which R ,R ,R ,R independently of one another denote hydrogen, C1- to C4-alkyl, C1- to C4-alkoxy, C1- to C4-haloalkyl, nitro, cyano, halogen, C1- to C4-alkylcarbonyl, benzoyl, C1- to C4-alkylcarbonylamino, benzoylamino, N-C1- to C4-alkylphenylamino, C1- to C4-alkoxycarbonyl, C1- to C4-alkylsulphonyl, phenylsulphonyl, aminosulphonyl, aminocarbonyl, C1- to C4-phenylalkyl and nitrobenzyl or R , R or R , R or R , R denote a butadienyl chain which is optionally substituted by R to R , by a) reacting thiophenols of the general formula II in which the substituents R to R have the abovementioned meanings, with chloroacetaldehyde at temperatures from 0 to 150 DEG C and b) cyclising the resultant (arylthio)acetaldehyde of the general formula III in which the substituents R to R have the abovementioned meanings, by introducing it into polyphosphoric acid or a mixture of phosphoric acid and phosphorus pentoxide at temperatures of from 100 to 300 DEG C and pressures from 0.001 to 1 bar.

公开(公告)号：DE19503327A1

公开(公告)日：1996-08-08

申请号：DE19503327

申请日：1995-02-02

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  EIERMANN MATTHIAS DR ,  PAPKALLA THOMAS DR

IPC: C07C67/333 ,  C07C69/738

Abstract: Prepn. of 5-oxo-6-heptenoic acid alkyl esters of formula (I) comprises: (a) reaction of 5-acetyl-2-norbornene (VI) with a dialkylcarbonate of formula (VII), in the presence of a base, to give a 3-(2-norbornen-5-yl)-3-oxopropionic acid alkyl ester of formula (II); (b) reaction of (II) with an unsatd. cpd. of formula (III) in the presence of a base, and hydrolysis to give a 5-(2-norbornen-5-yl)-5- oxopentanoic acid of formula (IV); (c) esterification to a 5-(2-norbornen-5-yl)-5- oxopentanoic acid ester of formula (V); and (d) thermal cleavage of this cpd. at 300-700 degrees C to give (I). Q = H (in (IV)) or R (in (V)); X, Y = H or Me; R = 1-8C alkyl; R = 1-4C alkyl; Z = CN or CO2R ; R = 1-4C alkyl;

公开(公告)号：DE4446893A1

公开(公告)日：1996-07-04

申请号：DE4446893

申请日：1994-12-27

Applicant: BASF AG

Inventor： MELDER JOHANN-PETER DR ,  SCHNURR WERNER DR ,  FLICK KLEMENS DR ,  EBEL KLAUS DR ,  WITZEL TOM DR ,  FISCHER ROLF DR ,  HARDER WOLFGANG DR ,  REHFINGER ALWIN DR

IPC: B01J23/76 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24 ,  B01J23/89 ,  C07B43/04

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

公开(公告)号：DE59107293D1

公开(公告)日：1996-03-07

申请号：DE59107293

申请日：1991-05-04

Applicant: BASF AG

Inventor： EBEL KLAUS DR

IPC: C07D233/54 ,  C07D233/58 ,  C07D233/64 ,  C07D233/68 ,  C07D521/00

Abstract: Process for the preparation of N-substituted imidazoles of the general formula I … … in which the substituents …… R denotes C1- to C20-alkyl, C2- to C20-alkenyl, C2- to C20-alkynyl, C2- to C20-alkoxyalkyl, C3- to C20-alkenyloxyalkyl, C3- to C12-cycloalkyl, C4- to C20-cycloalkylalkyl, aryl which is unsubstituted or substituted by C1- to C8-alkyl, C1- to C8-alkoxy, halogen, C1- to C4-haloalkyl, C1- to C4-haloalkoxy or phenoxy or denotes C7- to C20-arylalkyl, … the substituents R , R , R , independently of one another, denote hydrogen, C1- to C20-alkyl, C2- to C20-alkoxyalkyl, C3- to C12-cycloalkyl, halogen, aryl which is unsubstituted or substituted by C1- to C8-alkyl, C1- to C8-alkoxy, halogen, C1- to C4-haloalkyl, C1- to C4-haloalkoxy or phenoxy or denote C7- to C20-arylalkyl or R and R together denote a (CH2)n or (CH=CH)m group which is unsubstituted or mono- or disubstituted by C1- to C8-alkyl, C1- to C8-alkoxy and/or halogen and in which n represents 1 to 6 and m represents 1 to 3, … by reaction of imidazoles of the general formula II … … in which R , R and R have the abovementioned meanings, with halides of the general formula III… R -X (III> in which X represents chlorine, bromine or iodine and R has the abovementioned meanings, in aqueous hydroxide solutions at temperatures of 0 to 100 DEG C by carrying out the reaction in the presence of 0.1 to 50 mol % of an N-substituted imidazole, relative to II.

公开(公告)号：DE59300309D1

公开(公告)日：1995-08-03

申请号：DE59300309

申请日：1993-09-29

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR

IPC: C07C11/12 ,  C07C33/03 ,  C07C33/042 ,  C07C49/675 ,  C07C50/16

Abstract: tert-Amyl compounds of the general formula I in which R is and novel processes for the preparation of 2-tert-amylbutadiene by dehydration of 3,4,4-trimethylhex-1-en-3-ol at temperatures from 100 to 350@C and pressures from 0.01 to 50 bar on acidic catalysts, their preparation by partial hydrogenation of 3,4,4-trimethylhex-1-in-3-ol at temperatures from 0 to 50@C and pressures from 0.01 to 50 bar, and their preparation by reacting tert-amyl methyl ketone (3,3-dimethylpentan-2-one) with acetylene in the presence of basic catalysts at temperatures from 0 to 60@C and pressures from 0.01 to 50 bar, furthermore the reaction of 2-tert-amylbutadiene with 1,4-naphthoquinone at temperatures from 20 to 200@C and pressures from 0.01 to 50 bar to give 2-tert-amyl-1,4,4a,9a-tetrahydroanthraquinone, followed by oxidation at temperatures from 0 to 50@C in the presence of a strong base.

公开(公告)号：DE4318960A1

公开(公告)日：1994-12-15

申请号：DE4318960

申请日：1993-06-08

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  SCHROEDER JUERGEN DR ,  GROENING CARSTEN DR ,  DOCKNER TONI DR ,  MERKLE HANS RUPERT DR

IPC: C07D231/12 ,  C07D521/00

Abstract: Process for the preparation of N-substituted pyrazoles of the formula I in which R is C1- to C12-alkyl or C7- to C20-phenylalkyl and R , R and R independently of one another are hydrogen, C1- to C12-alkyl or C7- to C20-phenylalkyl by reaction of pyrazoles of the formula II in which R , R and R have the abovementioned meanings, with compounds of the formula III R - O - R in which R has the abovementioned meanings and R is hydrogen or R , in the presence of a catalyst at temperatures from 200 to 550 DEG C and pressures from 0.001 to 50 bar by employing a heterogeneous catalyst as the catalyst.

公开(公告)号：AT113620T

公开(公告)日：1994-11-15

申请号：AT89115340

申请日：1989-08-19

Applicant: BASF AG

Inventor： BERBNER HEINZ ,  EBEL KLAUS DR ,  KUCZATY MICHAEL ,  SEID BERNHARD ,  WOERNER FRANK PETER DR ,  ZETTLER HANS DIETER

IPC: C08G12/32

Abstract: The present invention relates to a process for the continuous preparation of melamine-formaldehyde precondensate solutions, characterised in that melamine, formaldehyde and optionally modifiers and/or additives are metered into a continuous mixture, the homogeneous mixture is passed into a single- or twin-screw extruder, condensed at elevated temperature, cooled and discharged.

公开(公告)号：DE59200536D1

公开(公告)日：1994-10-27

申请号：DE59200536

申请日：1992-10-08

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  EBEL KLAUS DR ,  BRUDERMUELLER MARTIN DR

IPC: C07D233/61 ,  C07D233/88 ,  C07D233/90

Abstract: 1,1'-Bis-(3-aminopropyl)-2,2'-diimidazole of the formula I, and a novel process for the preparation of 1,1'-bis-(3-aminopropyl)-2,2'-diimidazole of the formula I, in which 2,2'-diimidazole of the formula II, is reacted with acrylonitrile of the formula III, in the presence of basic catalysts at temperatures from 80 to 150 DEG C, and the product is hydrogenated with an excess of hydrogen on cobalt-, nickel-, ruthenium- and/or noble-metal-containing catalysts in the presence of ammonia, at temperatures from 40 to 200 DEG C and under pressures from 10 to 200 bar.

公开(公告)号：DE3688776D1

公开(公告)日：1993-09-02

申请号：DE3688776

申请日：1986-08-29

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  REUTHER WOLFGANG DR

IPC: C07D251/70 ,  C08G12/26 ,  C08G12/34 ,  C08G18/38 ,  C08K5/34 ,  C08K5/3492

Abstract: Hydroxyoxaalkyl melamines of formula (I) are new: R1-R3=H or (CHR4-CHR5-O)nH; R4 and R5=H or 1-4C alkyl; n=2 or 3. N-mono-, N,N'-di- and N,N',N''-tri(5-hydroxy -3-oxapentyl)-melamine are specifically claimed. Cpds. (I) may be prepd. by reacting cpd. (III) with H(O-CHR5-CHR4)mNH2 (II) pref. at 120-250 deg. C in presence of acid catalyst.

公开(公告)号：DE3676433D1

公开(公告)日：1991-02-07

申请号：DE3676433

申请日：1986-09-26

Applicant: BASF AG

Inventor： TURZNIK GERHARD DR ,  WOERNER FRANK PETER DR ,  WEBER HEINZ DR ,  EBEL KLAUS DR ,  KAEPPEL HANSHELMUT ,  GOEPEL JUERGEN

IPC: C08G12/30 ,  C08J9/14