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    New potassium-magnesium L-ascorbate-2-phosphate - recovered as stable, easily processed crystals from ascorbic acid phosphorylation mixt.
    72.
    发明专利
    New potassium-magnesium L-ascorbate-2-phosphate - recovered as stable, easily processed crystals from ascorbic acid phosphorylation mixt. 未知

    公开(公告)号：DE4000977A1

    公开(公告)日：1991-07-18

    申请号：DE4000977

    申请日：1990-01-16

    Applicant: BASF AG

    Inventor： DOBLER WALTER DR ,  BALKENHOHL FRIEDHELM DR ,  BETZ ROLAND DR ,  PAUST JOACHIM DR

    IPC: C07F9/655

    Abstract: K-Mg L-ascorbate-2-phosphate (I) is a new cpd. Pref., it has K:Mg atom ratio 1 +/- 0.3 : 1 +/- 0.15. The salt is prepd. by treating aq. soln. of K L-ascorbate-2-phosphate (III) with a medium-acidity cation exchanger which loses its exchange capacity at pH 2-0.5 to produce a soln. of mono-K salt. This is treated with MgO, Mg(OH)2 or MgCO3 to about pH7 and the soln. opt. treated with MeOH or acetone to ppte. (I). USE/ADVANTAGE - Conversion to (I) is used to recover L-ascorbic acid-2-phosphate (II) from phosphorylation mixt. It is produced free of inorganic salts; in well-crystallisation form which is easy to filter, non-hygroscopic and has little tendency to cake or form dust. The use of a medium-acidity resin produces an eluate which is not strongly acid (so does not decompose the product); MgO consumption and salt discharge are reduced, and regeneration times for the resin are Compared with ascorbic acid itself, (II) is more stable to oxygen, heat and hydrolysis, and has universal bioavailability.

    Soluble electroconductive polymer prepn. - obtd. from conjugated polyene aldehyde or ketone by reaction with poly:phosphorylide of methyl-styrene polymer etc.
    74.
    发明专利
    Soluble electroconductive polymer prepn. - obtd. from conjugated polyene aldehyde or ketone by reaction with poly:phosphorylide of methyl-styrene polymer etc. 未知

    公开(公告)号：DE3937659A1

    公开(公告)日：1990-06-07

    申请号：DE3937659

    申请日：1989-11-11

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT DR ,  PAUST JOACHIM DR

    IPC: C08F8/28 ,  H01B1/12

    Abstract: Soluble electroconductive polymers (I) are obtd. by reacting a conjugated polyene-aldehyde or -ketone with 10-50 ene units with a polyphosphorylide (II) of a methylstyrene homo- or copolymer of the formula (II), where m = 10-1500; PR3 = the radical of PPh3 or a phosphonate; or with a polyphosphorylide of a di- or poly-methyl-substd. aromatic; or by reacting a phosphorylide of a conjugated polyene with 10-50 ene unitse with a homo- or copolymer contg. carbonyl gps. (I) has mol. wt. 1000-500000, pref. 20000-250000. USE/ADVANTAGE - (I) are useful as sensors, lacquers, coating materials, optical signal transmitters, electroconductive coatings, compression moulding equipmentm or powders for electrodes, energy stores, transformers (e.g. for photovoltaic effects, also in combination with ceramic components) and energy carriers.

    75.
    发明专利
    未知

    公开(公告)号：DE3810957A1

    公开(公告)日：1989-10-19

    申请号：DE3810957

    申请日：1988-03-31

    Applicant: BASF AG

    Inventor： DOBLER WALTER DR ,  EGGERSDORFER MANFRED DR ,  PAUST JOACHIM DR

    IPC: C07D475/14 ,  C07F9/547 ,  C07F9/6561

    Abstract: Process for the purification of salts of riboflavin 5'-phosphate obtained by phosphorylation of riboflavin and reaction of the riboflavin 5'-phosphate (5'-FMN) contaminated with unreacted riboflavin and isomeric riboflavin monophosphates and diphosphates and formed in this process with alkali metal hydroxides or nitrogen bases, which is characterised in that a) an approximately 1 to 15% strength by weight homogeneous, clear, aqueous 5'-FMN salt solution having a pH from 4 to 7 is prepared from the crude 5'-FMN obtained in the phosphorylation, water, and the alkali metal hydroxide or the nitrogen base, preferably sodium hydroxide solution, optionally with warming at 30 to 100 DEG C, b) the solution obtained is treated with a suitable polymeric adsorber resin and c) the 5'-FMN salt largely purified of unreacted riboflavin is isolated from the solution obtained in this process and, if desired, the solution is submitted to a subsequent fine purification. The treatment with the suitable polymeric adsorber resin is advantageously carried out in a column packed with adsorber resin. The subsequent fine purification can be carried out by means of crystallisation by evaporation or by chromatography of a 5'-FMN solution containing 1 to 15% by weight of dry material in water or a mixture of water and a lower aliphatic alcohol having a pH between 4 and 7 in a minimum amount of 5 to 50% of the bed volume of the column on RP silica gel derivatised with alkyl groups using water or a mixture of water and a lower aliphatic alcohol as the eluent. The preparative chromatography of 5'-FMN salts on derivatised RP silica gel with water or a mixture of water and a lower aliphatic alcohol as the solvent and eluent is also claimed independently of the pretreatment with the suitable adsorber resin.

    76.
    发明专利
    未知

    公开(公告)号：DE3719622A1

    公开(公告)日：1988-12-29

    申请号：DE3719622

    申请日：1987-06-12

    Applicant: BASF AG

    Inventor： KNAUS GUENTER H DR ,  ERNST HANSGEORG DR ,  THYES MARCO DR ,  PAUST JOACHIM DR

    IPC: C07C69/65 ,  C07C69/653 ,  C07F9/40

    Abstract: Alkyl gamma -halotiglates of the general formula I (I) where X is Cl or Br and R2 is alkyl of 1 to 3 carbon atoms, having a high E isomer content, are prepared by a process in which (a) the corresponding 2-methyl-but-3-enoate of the general formula II (II) is reacted with chlorine or bromine in the absence of a solvent and (b) the resulting 2-methyl-3,4-dihalobutyrate of the general formula III (III) is dehydrohalogenated by reaction with a solution of an alkali metal hydroxide in an alcohol R2OH, where R2 has the stated meaning, or in a mixture of water and an alcohol R2OH, and the products are further processed to give O,O-dialkyl- gamma -phosphonotiglates of the general formula IV (IV) where R1 is alkyl of 1 to 4 carbon atoms and R2 is alkyl of 1 to 3 carbon atoms, preferably ethyl, by reaction with a trialkyl phosphite and thermal isomerization. The process gives C5 building blocks which are extremely interesting for polyene chemistry, the said building blocks being obtained in good yields and essentially in the form of the required E isomers.

    78.
    发明专利
    未知

    公开(公告)号：DE3615834A1

    公开(公告)日：1987-11-12

    申请号：DE3615834

    申请日：1986-05-10

    Applicant: BASF AG

    Inventor： ERNST HANSGEORG DR ,  LEININGER HARTMUT DR ,  PAUST JOACHIM DR

    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.

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