公开(公告)号：AT120445T

公开(公告)日：1995-04-15

申请号：AT92109975

申请日：1992-06-13

Applicant: BASF AG

Inventor： SCHUSTER LUDWIG DR ,  HALBRITTER KLAUS DR

IPC: B01J23/42 ,  B01J23/44 ,  B01J25/02 ,  C07B61/00 ,  C07C67/44 ,  C07C67/46 ,  C07C69/38

Abstract: The invention relates to a process for preparing dialkyl malonates by ozonolysis of diketene, subsequent catalytic hydrogenation and esterification of the reaction products, the by-products being alkyl formates and dialkyl acetals.

公开(公告)号：DE3382318D1

公开(公告)日：1991-07-25

申请号：DE3382318

申请日：1983-07-11

Applicant: BASF AG

Inventor： GRAMLICH WALTER DR ,  HALBRITTER KLAUS DR ,  HEILEN GERD DR

IPC: C07C69/34 ,  B01J23/00 ,  B01J27/00 ,  C07B31/00 ,  C07B37/00 ,  C07B37/04 ,  C07B61/00 ,  C07C45/00 ,  C07C45/48 ,  C07C45/73 ,  C07C49/12 ,  C07C49/403 ,  C07C67/00 ,  C07C67/343 ,  C07C69/38 ,  C07C69/716 ,  C07C253/00 ,  C07C255/04 ,  C07C255/17 ,  C07C255/19 ,  C07C255/32 ,  C07C255/45 ,  C07C255/46

Abstract: beta -Dicarbonyl and beta -cyanocarbonyl compounds I where R1 is alkyl of 1-20 carbons, X is -COR2, Y is -COOR3, -COR3 or -CN, and R2 and R3 are each C1-C10-alkyl, are prepared from R1-CHO (II) and X-CH2-Y (III) by reaction in the presence of a condensation catalyst, hydrogen and a hydrogenation catalyst, using an oxide or phosphate of Mg, Al, Ti, Zn or a rare earth metal as the condensation catalyst.

公开(公告)号：DE3769238D1

公开(公告)日：1991-05-16

申请号：DE3769238

申请日：1987-07-21

Applicant: BASF AG

Inventor： HENKES ERHARD DR ,  HALBRITTER KLAUS DR ,  MAYR HERBERT PROF DR ,  STRIEPE WILHELM DR ,  POCK RUDOLF DR

IPC: C07C2/68 ,  C07C2/86 ,  C07C13/465

Abstract: Indanes are prepared by reacting substituted or unsubstituted benzyl halides with olefins in the presence of a Lewis acid as catalyst by reacting benzyl halides I I (where R1 and R2=hydrogen, alkyl, alkoxy, cycloalkyl, aryl, aryloxy, aralkyl R3=R1, halogen or an ortho-fused ring system X=halogen) with olefins II II (where R4 to R7=hydrogen or alkyl unbranched at alpha) in the presence of catalytic amounts of titanium tetrachloride.

公开(公告)号：DE3363751D1

公开(公告)日：1986-07-03

申请号：DE3363751

申请日：1983-07-27

Applicant: BASF AG

Inventor： HALBRITTER KLAUS DR ,  EGGERSDORFER MANFRED DR

IPC: C07D307/60

Abstract: 1. A process for the preparation of 4,4-dimethyltetrahydrofuran-2,3-dione (I), wherein a dimethylpyruvate (II) is reacted with formaldehyde or a formaldehyde donor at 80-150 degrees C.

公开(公告)号：DE3307635A1

公开(公告)日：1984-09-06

申请号：DE3307635

申请日：1983-03-04

Applicant: BASF AG

Inventor： ECKHARDT HEINZ DR ,  HALBRITTER KLAUS DR ,  GOETZ NORBERT DR ,  HEILEN GERD DR

IPC: C07D309/26

公开(公告)号：DE3301719A1

公开(公告)日：1984-07-26

申请号：DE3301719

申请日：1983-01-20

Applicant: BASF AG

Inventor： ECKHARDT HEINZ DR ,  HALBRITTER KLAUS DR

IPC: C07C29/10 ,  C07C41/50 ,  C07C41/60 ,  C07C43/303 ,  C07C41/48

Abstract: 2,2-dialkoxypropanes are prepared by reacting 2,2-dimethyl-(1,3)-dioxolanes with alkanols in the presence of acids and/or halides of elements of Group IIb, IIIa, IVb or Va of the Periodic System and/or iron, tin or silicon as catalysts. The 2,2-dialkoxypropanes which can be prepared by the process of the invention are valuable starting materials for the preparation of insecticides, crop protection agents and pharmaceuticals.

公开(公告)号：DE2860555D1

公开(公告)日：1981-04-16

申请号：DE2860555

申请日：1978-12-28

Applicant: BASF AG

Inventor： HALBRITTER KLAUS DR

IPC: C07D233/54 ,  C07D233/64

Abstract: 4-Methyl-5-chloromethyl-imidazole is prepared in the form of its hydrochloride by direct chloromethylation of 4-methyl-imidazole, thus becoming readily available industrially as an intermediate.

公开(公告)号：ES2169457T3

公开(公告)日：2002-07-01

申请号：ES98108692

申请日：1998-05-13

Applicant: BASF AG

Inventor： AQUILA WERNER DR ,  FUCHS HARTWIG ,  WORZ OTTO DR ,  RUPPEL WILHELM DR ,  HALBRITTER KLAUS DR

IPC: B01J23/52 ,  B01J8/02 ,  B01J8/08 ,  C07B61/00 ,  C07C45/38 ,  C07C45/67 ,  C07C47/21 ,  C07C47/22

Abstract: Continuous technical preparation of aldehydes of formula (I) comprises dehydration of the corresponding alcohol of formula (II) with an oxygen-containing gas using a catalyst based on copper, silver and/or gold on an inert carrier in a multi-pipe reactor. This is followed by rapid cooling of the reaction gases, separation of the aldehyde from the resulting condensate and recycling of any unreacted alcohol. During the process (II) is vapourised, the alcohol vapour is mixed with the oxygen-containing gas, the resulting vapour is passed through a 0.5 cm layer of the catalyst at a temperature that is greater than the boiling point of the alcohol but lower than the starting temperature of the reaction and the vapour is then allowed to pass through a number of parallel pipes which are filled with catalyst and kept warm by a circulating fluid. The pipes have an inner diameter, D, of 0.5-3 cm and are at least 5 cm long and the reaction temperature is 300-600 degrees C. R1R2CHO (I) R1R2CH-CH2-OH (II) R1 = H and R2 = CH2=C(CH3)- (isoprenal); or R1+R2 = (CH3)2C= (prenal)

公开(公告)号：DE4407019A1

公开(公告)日：1994-09-08

申请号：DE4407019

申请日：1994-03-03

Applicant: BASF AG

Inventor： SCHUSTER LUDWIG DR ,  HALBRITTER KLAUS DR ,  LAQUA GERHARD DR ,  MERGER FRANZ DR

IPC: B01J23/46 ,  B01J37/18 ,  C07C263/04 ,  C07C269/06 ,  C07C271/24 ,  C07C265/10 ,  C07C265/14

Abstract: Preparation of cycloaliphatic urethanes by hydrogenating the corresponding aromatic urethanes with hydrogen in the presence of a noble metal of group VIII of the Periodic Table or a compound of one of these metals as a catalyst in an inert solvent.

公开(公告)号：DE3726510A1

公开(公告)日：1989-02-16

申请号：DE3726510

申请日：1987-08-08

Applicant: BASF AG

Inventor： EGGERSDORFER MANFRED DR ,  FRANZ LOTHAR DR ,  ZIMMERMANN HORST DR ,  BRENNER KARL ,  HALBRITTER KLAUS DR ,  SAUER WOLFGANG DR ,  SCHEIPER HANS-JUERGEN

IPC: C07C29/17 ,  C07D307/08

Abstract: Process for the preparation of tetrahydrofuran or of mixtures which, in addition to tetrahydrofuran, contain gamma -butyrolactone and/or 1,4-butanediol, by catalytic hydrogenation of maleic acid, succinic acid, fumaric acid, maleic anhydride or succinic anhydride at temperatures from 150 to 350@C and at pressures from 50 to 350 bar on a catalyst which contains, as catalytically active metal, cobalt and at least one of the elements copper and phosphorus.