36.
    发明专利
    未知

    公开(公告)号:DK212285A

    公开(公告)日:1985-11-16

    申请号:DK212285

    申请日:1985-05-14

    Applicant: BASF AG

    Abstract: An improved process for the preparation of riboflavin by condensation of a 4,5-dimethyl-N-(D)-ribityl-2-phenylazoaniline derivative with barbituric acid in the presence of an acidic condensing agent in an organic solvent, wherein a 4,5-dimethyl-N-(D)-ribityl-2-(o-alkoxyphenylazo)-aniline of the formula IIa where R is alkyl of 1 to 4 carbon atoms, in particular methyl, is reacted with barbituric acid, as well as the novel intermediates of the formula IIa.

    37.
    发明专利
    未知

    公开(公告)号:DK212285D0

    公开(公告)日:1985-05-14

    申请号:DK212285

    申请日:1985-05-14

    Applicant: BASF AG

    Abstract: An improved process for the preparation of riboflavin by condensation of a 4,5-dimethyl-N-(D)-ribityl-2-phenylazoaniline derivative with barbituric acid in the presence of an acidic condensing agent in an organic solvent, wherein a 4,5-dimethyl-N-(D)-ribityl-2-(o-alkoxyphenylazo)-aniline of the formula IIa where R is alkyl of 1 to 4 carbon atoms, in particular methyl, is reacted with barbituric acid, as well as the novel intermediates of the formula IIa.

    Antioxidant, useful for preparation of e.g. coloring agent, vesicle, dermocosmetic, pharmaceuticals and nutrient- or feedstuff, comprises at least an isorenieratene compound

    公开(公告)号:DE102006034320A1

    公开(公告)日:2008-01-24

    申请号:DE102006034320

    申请日:2006-07-21

    Abstract: Antioxidant comprises at least an isorenieratene compound (I). Antioxidant comprises at least an isorenieratene compound of formula (I). R1>H or easily splittable protecting group; and R2>-R4>1-3C-alkyl. Independent claims are included for: (1) mixture (M1) comprising at least (I) and 3,3'-dihydroxyisorenieratene-1-quinone (II) and/or 3,3'-dihydroxy-2,2',4,4'-tetra-tert-butylisorenieratene-1-quinone (III); (2) mixture (M2) comprising 3,3'-dihydroxy-2,2',4,4'-tetra-tert-butylisorenieratene (IV) and at least (I) or (M1); (3) preparation (V) comprising (I), (II), (III) and/or (IV); (4) dermocosmetic, pharmaceutical and nutrient or feedstuff comprising (V); (5) solid material and/or liquid comprising (V); (6) coloring agent (A) comprising (II) or (III) or (IV) or (M1) or (M2); (7) coloring agent (B) comprising (V) in the form of H- or J-aggregate; (8) dermocosmetic, pharmaceutical, and nutrient or feedstuff comprising (A) or (B); (9) solid or liquid material comprising (A) or (B); (10) vesicle comprising (V); (11) dermocosmetic, pharmaceutical and nutrient- or feed stuff comprising the vesicle; (12) solid or liquid material comprising the vesicle; (13) carotenoid-formulation comprising (V); (14) preparation (VI)comprising the carotenoid formulation or (V); (15) dermocosmetic, pharmaceutical and nutrient or feedstuff comprising the carotenoids formulation or (V); (16) gelatin capsule comprising the carotenoids-formulation or (V); and (17) preparation of antioxidant, (M1) or (M2), (V), (A), vesicle, carotenoid-formulation, dermocosmetic, pharmaceutical, nutrient- or feedstuff, gelatin capsule or solid or liquid material comprising mixing (V), antioxidant, (M1) or (M2), (VI), (A), vesicle or carotenoid formulation. [Image].

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