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    Method for the preparation of (3E,7E)-homofarnesic acid or (3E,7E)-homofarnesic acid ester
    3.
    发明授权
    Method for the preparation of (3E,7E)-homofarnesic acid or (3E,7E)-homofarnesic acid ester 有权

    公开(公告)号：US11136611B2

    公开(公告)日：2021-10-05

    申请号：US16487978

    申请日：2018-02-23

    Applicant: BASF SE

    Inventor： Wolfgang Siegel ,  Melanie Weingarten ,  Michael Breuer ,  Mathias Schelwies

    IPC: C12P41/00 ,  C12P7/40 ,  C12P17/04

    Abstract: The invention provides an improved method of isolating the 3-(E)-isomer of an unsaturated carboxylic acid from a mixture of corresponding (E/Z)isomers. More particularly, the present invention relates to an improved method for the biocatalytic preparation of (3E,7E)-homofarnesylic acid; as well as a novel biocatalytic method for the improved preparation of homofarnesol, in particular of (3E,7E)-homofarnesol and homofarnesol preparations having an increased content of (3E,7E)-homofarnesol. The present invention also relates to methods of preparing(−)-ambroxby applying (3E,7E)-homofarnesylic acid or (3E,7E)-homofarnesol as obtained according to the invention as starting material.

    Method for preparing ethers of cycloaliphatic or araliphatic diols
    4.
    发明授权
    Method for preparing ethers of cycloaliphatic or araliphatic diols 有权

    公开(公告)号：US11078146B2

    公开(公告)日：2021-08-03

    申请号：US16769716

    申请日：2018-12-03

    Applicant: BASF SE

    Inventor： Melanie Weingarten ,  Wolfgang Siegel ,  Ralf Pelzer ,  Florian Garlichs

    IPC: C07C41/06 ,  C07C41/01 ,  C07C41/05

    Abstract: The present invention relates to a method for preparing a dialkyi or dialkenyl ether of a cycloaliphatic or araliphatic diol, which comprises (i) reacting the cycloaliphatic or araliphatic diol with metallic sodium in an aprotic organic solvent in the presence of a catalytic amount of at least one monoether-monoalcohol of formula (I) wherein Y is identical or different and selected from C2-C4-alkylene, n is an integer in the range from 1 to 10, and R1 is C1-C4-Alkyl, whereby the corresponding disodium dialcoholate is obtained, reacting the disodium dialcoholate obtained in step (i) with an alkylation alkenylation reagent.

    Synthesis of chromanol derivatives
    8.
    发明授权
    Synthesis of chromanol derivatives 有权

    公开(公告)号：US11673874B2

    公开(公告)日：2023-06-13

    申请号：US17268985

    申请日：2019-08-16

    Applicant: BASF SE

    Inventor： Melanie Weingarten ,  Wolfgang Siegel ,  Michael Puhl

    IPC: C07D311/72

    CPC classification number: C07D311/72

    Abstract: The present invention relates to a process for the production of chromanol derivatives, more specifically to a process for preparing a compound of the general formula I wherein R1, R2 and R3 independently of each other are selected from hydrogen and methyl, R4 is selected from C-1-C6-alkyl, and X is selected from C1-C20-alkyl and C2-C20-alkenyl.

    Method for preparing 2′-O-fucosyllactose
    9.
    发明授权
    Method for preparing 2′-O-fucosyllactose 有权

    公开(公告)号：US11098075B2

    公开(公告)日：2021-08-24

    申请号：US15510268

    申请日：2015-09-11

    Applicant: BASF SE

    Inventor： Michael Puhl ,  Klaus Ditrich ,  Andreas Keller ,  Pepa Dimitrova ,  Melanie Weingarten ,  Wolfgang Siegel

    IPC: C07H15/26 ,  C07H3/06 ,  C07H1/00 ,  A23L33/10

    Abstract: The present invention relates to a method for preparing 2′-O-fucosyllactose, the 2′-O-fucosyllactose obtainable by this method and the use thereof. The method comprises reacting the persilylated, protected fucose derivatives of the formula (I) below, with at least one tri(C1-C6-alkyl)silyl iodide and subsequently reacting the product thus obtained with the compound of the general formula (II), in the presence of a base. In the formulae (I) and (II), the variables are each defined as follows: RSi are the same or different and are a residue of the formula SiRaRbRc; R1 is a C(═O)—R11 residue or an SiR12R13R14 residue, R2 are the same or different and are C1-C8-alkyl or together form a linear C3-C6-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents; R3 are the same or different and are C1-C8-alkyl or together form a linear C1-C4-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents.

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