公开(公告)号：DE19904812A1

公开(公告)日：2000-08-10

申请号：DE19904812

申请日：1999-02-05

Applicant: BASF AG

Inventor： BOTZEM JOERG ,  JAEDICKE HAGEN ,  JOHN MICHAEL ,  PAUST JOACHIM

IPC: C07C49/175 ,  C07C237/36 ,  C07C251/08 ,  C07D475/04

公开(公告)号：DE59310019D1

公开(公告)日：2000-05-31

申请号：DE59310019

申请日：1993-07-09

Applicant: BASF AG

Inventor： FISCH HERBERT ,  HAAS KARL-HEINZ ,  SCHROF WOLFGANG ,  PAUST JOACHIM ,  TICKTIN ANTON ,  KRAUSE WOLFGANG

IPC: G02F1/35 ,  C07C11/21 ,  C07C403/00 ,  C07C403/12 ,  C07C403/24 ,  C08K5/07 ,  C09D7/12 ,  G02F1/355 ,  G02F1/361

公开(公告)号：CA2338991A1

公开(公告)日：2000-02-17

申请号：CA2338991

申请日：1999-07-12

Applicant: BASF AG

Inventor： RIEGER JENS ,  PAUST JOACHIM ,  NIEBEL MARKUS ,  KLATT MARTIN JOCHEN

IPC: A23L1/30 ,  A61K31/385 ,  C07B57/00 ,  C07D339/04

Abstract: The invention relates to enantiomer-free crystalline (R) or (S) lipoic acid, where the reflection line at 2 .THETA. = 23~ is the most intensive one in th e 13~ to 30~ range in the 2 .THETA. diffractogram.

公开(公告)号：IN176974B

公开(公告)日：1996-10-12

申请号：IN520MA1993

申请日：1993-07-28

Applicant: BASF AG

Inventor： KAISER KLAUS ,  PAUST JOACHIM ,  BALKENHOOHL FRIENDHEUM

IPC: C07D307/00

公开(公告)号：AU4321993A

公开(公告)日：1994-01-04

申请号：AU4321993

申请日：1993-06-03

Applicant: BASF AG

Inventor： FISCH HERBERT ,  HAAS KARL-HEINZ ,  GIERULSKI ALFRED ,  HORN DIETER ,  NAARMANN HERBERT ,  PAUST JOACHIM ,  SCHROF WOLFGANG ,  TICKTIN ANTON

IPC: G02F1/35 ,  G02F1/355 ,  G02F1/361

公开(公告)号：DK155044C

公开(公告)日：1989-06-26

申请号：DK351976

申请日：1976-08-04

Applicant: BASF AG

Inventor： PAUST JOACHIM ,  SCHNEIDER JOACHIM ,  JAEDICKE HAGEN

IPC: C07B61/00 ,  B01J21/00 ,  B01J23/00 ,  C07C20060101 ,  C07C49/21 ,  C07C49/653 ,  C07C67/00 ,  C07C67/30 ,  C07C69/52 ,  C07C401/00 ,  C07C403/00 ,  C07C403/24

Abstract: Process for the manufacture of canthaxanthin by oxidizing beta -carotene, retro-dehydro-carotene or echinenone with a salt of chloric or bromic acid in the presence of a catalyst and of an inert diluent or solvent.

公开(公告)号：DK234687A

公开(公告)日：1987-11-11

申请号：DK234687

申请日：1987-05-08

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  LEININGER HARTMUT ,  PAUST JOACHIM

IPC: C07B61/00 ,  B01J25/00 ,  B01J25/02 ,  C07C67/00 ,  C07C213/00 ,  C07C213/02 ,  C07C215/10 ,  C07C215/16 ,  C07C215/68 ,  C07H5/04 ,  C07C91/10

Abstract: N-(D)-ribitylxylidine (I) is prepared by reacting (D)-ribose (II) with 3,4-dimethylaniline (III) or 3,4-dimethyl-1-nitrobenzene (IV) in aqueous or aqueous/organic solution or in solution in a water-soluble organic solvent under an elevated hydrogen pressure and in the presence of a hydrogenation catalyst and of a boric acid compound, (a) using the boric acid compound in a catalytic amount of from about 6 to 35 mmol, preferably from 6 to 20 mmol, per mol of ribose, (b) carrying out the reaction under a hydrogen pressure of from 1 to 20, preferably from 2 to 9, bar and (c) carrying out the hydrogenation at from 40 DEG to 80 DEG C. over Raney nickel as hydrogenation catalyst.

公开(公告)号：DK234687D0

公开(公告)日：1987-05-08

申请号：DK234687

申请日：1987-05-08

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  LEININGER HARTMUT ,  PAUST JOACHIM

IPC: C07B61/00 ,  B01J25/00 ,  B01J25/02 ,  C07C67/00 ,  C07C213/00 ,  C07C213/02 ,  C07C215/10 ,  C07C215/16 ,  C07C215/68 ,  C07H5/04 ,  C07C91/10

Abstract: N-(D)-ribitylxylidine (I) is prepared by reacting (D)-ribose (II) with 3,4-dimethylaniline (III) or 3,4-dimethyl-1-nitrobenzene (IV) in aqueous or aqueous/organic solution or in solution in a water-soluble organic solvent under an elevated hydrogen pressure and in the presence of a hydrogenation catalyst and of a boric acid compound, (a) using the boric acid compound in a catalytic amount of from about 6 to 35 mmol, preferably from 6 to 20 mmol, per mol of ribose, (b) carrying out the reaction under a hydrogen pressure of from 1 to 20, preferably from 2 to 9, bar and (c) carrying out the hydrogenation at from 40 DEG to 80 DEG C. over Raney nickel as hydrogenation catalyst.

公开(公告)号：DK382785A

公开(公告)日：1986-02-26

申请号：DK382785

申请日：1985-08-23

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  LITTMANN WOLFGANG ,  PAUST JOACHIM

IPC: C07C67/00 ,  C07C253/00 ,  C07C253/30 ,  C07C255/27 ,  C07C255/30 ,  C07D239/42 ,  C07C ,  C07D

Abstract: alpha -(o-Chlorophenyl)-aminomethylene- beta -formylaminopropionitrile, process for its preparation by reacting a metal salt of alpha -formyl- beta -formylaminopropionitrile with a salt of o-chloroaniline in an aqueous medium, and use of the product to prepare the compound of the formula by reaction with acetamidine. The pyrimidine thus obtained is an intermediate for the preparation of vitamin B1.

公开(公告)号：DK10886D0

公开(公告)日：1986-01-10

申请号：DK10886

申请日：1986-01-10

Applicant: BASF AG

Inventor： PFAFF KLAUS-PETER ,  PAUST JOACHIM ,  HARTMANN HORST

IPC: C07H1/00 ,  B01J31/00 ,  C07B61/00 ,  C07H9/04 ,  C07H

Abstract: Sugar ketals are prepared by reacting a sugar with a ketone in the presence of an acid catalyst by a process in which A. a molecular boron trifluoride compound or trifluoromethanesulfonic acid is used in an amount of only from 0.01 to 10% by weight, based on the sugar used, B. up to a 30-fold molar excess of the ketone is used and C. the water formed during the reaction is removed continuously from the reaction mixture. In a particularly advantageous embodiment of the process, the boron trifluoride is used in the form of boron trifluoride etherate and, when the reaction is complete, this compound or the trifluoromethanesulfonic acid is rendered ineffective under non-aqueous conditions, after which the ketone is evaporated off and the reaction mixture is then subjected to fractional distillation. The process is particularly important for the reaction of L-sorbose with acetone to obtain 2,3:4,6-di-O-isopropylidene-L-sorbofuranose, which is required for the synthesis of ascorbic acid.