公开(公告)号：NO20010516L

公开(公告)日：2001-01-30

申请号：NO20010516

申请日：2001-01-30

Applicant: BASF AG

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

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

Abstract: In the 2 &THgr; diffractogram of an enantiomerically pure crystalline (R)- or (S)-lipoic acid, the most intense reflection line in the range from 13° to 30° is that at 2 &THgr;=23°.

公开(公告)号：NO20010516D0

公开(公告)日：2001-01-30

申请号：NO20010516

申请日：2001-01-30

Applicant: BASF AG

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

IPC: A61K31/385 ,  A23L1/30 ,  C07B57/00 ,  C07D339/04 ,  C07D

Abstract: In the 2 &THgr; diffractogram of an enantiomerically pure crystalline (R)- or (S)-lipoic acid, the most intense reflection line in the range from 13° to 30° is that at 2 &THgr;=23°.

公开(公告)号：DE59408898D1

公开(公告)日：1999-12-16

申请号：DE59408898

申请日：1994-06-27

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  DOBLER WALTER ,  PAUST JOACHIM ,  RHEUDE UDO

IPC: C07C41/18 ,  C07C45/45 ,  C07C49/303 ,  C07C403/24 ,  C07D317/46 ,  C07D317/50 ,  C07D317/54 ,  C07D407/06 ,  C07D407/12 ,  C07F9/54 ,  C09B23/10

Abstract: Compounds of the general formula I in which R is H or C1-C4-alkyl, R is C1-C4-alkyl and R is an ether, silyl ether or acetal protective group which can be converted into a hydroxyl group by hydrolysis, in particular one of the radicals and a process for the production of these compounds by reacting an alkenyne of the general formula II in an inert solvent with additional use of lithium amide with a cyclohexenone of the general formula III and the use of the compounds of the formula I for the production of astaxanthin.

公开(公告)号：NO301716B1

公开(公告)日：1997-12-01

申请号：NO932860

申请日：1993-08-11

Applicant: BASF AG

Inventor： KAISER KLAUS ,  BALKENHOHL FRIEDHELM ,  PAUST JOACHIM

IPC: C07F9/655

Abstract: Process for obtaining the calcium salt of ascorbyl 2-monophosphate from aqueous/alkaline reaction mixtures as they are obtained when ascorbic acid is reacted with a molar excess of phosphorus oxychloride in the presence of a tertiary amine while maintaining a pH of 12 to 13 during the reaction by means of an aqueous alkali metal solution, which process is characterised in that a) starting from a reaction mixture which has been obtained by reacting ascorbic acid with phosphorus oxychloride in the presence of pyridine while maintaining a pH of 12 to 13 by means of an aqueous potassium hydroxide solution, b) the phosphoric acid ions formed during this reaction are precipitated by means of magnesium chloride in amounts of approximately 1 mol per mol of phosphoric acid ions as potassium magnesium phosphate, c) the potassium magnesium phosphate is separated off, d) the pyridine together with some of the water is removed from the remaining aqueous solution by distillation, e) the resulting aqueous solution is reacted with calcium chloride and f) the calcium salt of ascorbyl 2-monophosphate, which crystallises out during this process in the form of the calcium salt, is isolated, or in that, after process step a), the pyridine/water mixture is first removed as described in process step d) and process steps (b), (c), (e) and (f) are subsequently carried out.

公开(公告)号：NO942523L

公开(公告)日：1995-01-06

申请号：NO942523

申请日：1994-07-04

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  DOBLER WALTER ,  PAUST JOACHIM ,  RHEUDE UDO

IPC: C07C41/18 ,  C07C45/45 ,  C07C49/303 ,  C07C403/24 ,  C07D317/46 ,  C07D317/50 ,  C07D317/54 ,  C07D407/06 ,  C07D407/12 ,  C07F9/54 ,  C09B23/10

Abstract: Compounds of the general formula I in which R is H or C1-C4-alkyl, R is C1-C4-alkyl and R is an ether, silyl ether or acetal protective group which can be converted into a hydroxyl group by hydrolysis, in particular one of the radicals and a process for the production of these compounds by reacting an alkenyne of the general formula II in an inert solvent with additional use of lithium amide with a cyclohexenone of the general formula III and the use of the compounds of the formula I for the production of astaxanthin.

公开(公告)号：NO942523A

公开(公告)日：1995-01-06

申请号：NO942523

申请日：1994-07-04

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  DOBLER WALTER ,  PAUST JOACHIM ,  RHEUDE UDO

IPC: C07C41/18 ,  C07C45/45 ,  C07C49/303 ,  C07C403/24 ,  C07D317/46 ,  C07D317/50 ,  C07D317/54 ,  C07D407/06 ,  C07D407/12 ,  C07F9/54 ,  C09B23/10

CPC classification number: C07C403/24 ,  C07C403/04 ,  C07C403/08 ,  C07C403/10 ,  C07C2601/16 ,  C07D317/46 ,  C07F9/5435 ,  C07F9/5442 ,  Y02P20/55

公开(公告)号：DK162097B

公开(公告)日：1991-09-16

申请号：DK32884

申请日：1984-01-25

Applicant: BASF AG

Inventor： ERNST HANSGEORG ,  SCHMIDT WOLFRAM ,  PAUST JOACHIM

IPC: C07D475/14 ,  C07D475/02

公开(公告)号：DK158732C

公开(公告)日：1990-11-19

申请号：DK527283

申请日：1983-11-17

Applicant: BASF AG

Inventor： PAUST JOACHIM ,  LEININGER HARTMUT

IPC: C07D307/33 ,  C07D307/60

Abstract: Dihydro-4,4-dimethylfuran-2,3-dione is prepared by oxidation of racemic dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone by a process in which the oxidation is carried out by gradually adding powdered calcium oxide to a solution of racemic dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone and chlorine in the inert organic solvent.

公开(公告)号：HU195785B

公开(公告)日：1988-07-28

申请号：HU350987

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 ,  C07C121/45

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：DK228988D0

公开(公告)日：1988-04-27

申请号：DK228988

申请日：1988-04-27

Applicant: BASF AG

Inventor： DOBLER WALTER ,  PAUST JOACHIM

IPC: C07B61/00 ,  C07H3/02

Abstract: Continuous process for the epimerisation of pentoses and hexoses by heating a sugar dissolved in a solvent in the presence of a basic anion exchanger loaded with a molybdenum(VI) compound, which is characterised in that, for the preparation of a D- or L-sugar with cis-OH groups in the 2- and 3-position of the sugar, a homogeneous solution of the corresponding sugar with trans-OH groups in the 2- and 3-position of the sugar is passed continuously in a mixture of water and methanol or ethanol at temperatures from 70 to 100 DEG C, preferably 73 to 80 DEG C, through a reaction tube which contains the basic anion exchanger loaded with the molybdenum(VI) compound. This process is particularly suitable for the epimerisation of D-arabinose to the D-ribose needed for the preparation of riboflavin.