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    PROCESS FOR PREPARING D-GLUCARO-6,3-LACTONE
    3.
    发明申请
    PROCESS FOR PREPARING D-GLUCARO-6,3-LACTONE 审中-公开

    公开(公告)号：US20200024244A1

    公开(公告)日：2020-01-23

    申请号：US16482100

    申请日：2018-02-07

    Applicant: BASF SE

    Inventor： Abhijeet Roy ,  Dominik Ohlmann ,  Rahul Mulay ,  Priti Kulkarni ,  Vijay Narayanan Swaminathan

    IPC: C07D307/33

    Abstract: A process for preparing D-glucaro-6,3-lactone from a salt of D-glucaric acid is provided. The process includes: adding a mineral acid to a pre-cooled solution including a salt of D-glucaric acid, water, and acetone to obtain a crude mixture; allowing the crude mixture to rise to a temperature in a range of ≥15° C. to ≤35° C. and stirring the crude mixture; filtrating the crude mixture and washing with an acetone and water solvent mixture to obtain a filtrate; concentrating the filtrate under vacuum pressure to obtain a concentrated filtrate having a water content in a range of ≥20.0 wt. % to ≤40.0 wt. %, relative to an overall weight of the concentrated filtrate; storing the concentrated filtrate at a temperature in a range of ≥0° C. to ≤5° C., and optionally repeating the concentrating and storing steps to obtain a precipitate comprising D-glucaro-6,3-lactone.

    Process For Preparing Unsaturated Compounds
    6.
    发明申请
    Process For Preparing Unsaturated Compounds 审中-公开
    不饱和化合物的制备方法

    公开(公告)号：US20130340327A1

    公开(公告)日：2013-12-26

    申请号：US13926551

    申请日：2013-06-25

    Applicant: BASF SE

    Inventor： Dominik Ohlmann ,  Lukas J. Gooßen ,  Markus Dierker

    IPC: C07C67/475

    CPC classification number: C07C67/475 ,  C07C67/08 ,  C07C69/533 ,  C07C69/593

    Abstract: Aspects of the present invention relate to processes for preparing compositions comprising unsaturated compounds, wherein (A) one or more unsaturated monocarboxylic acids having 10-24 carbon atoms or esters of these monocarboxylic acids and (B) one or more unsaturated dicarboxylic acids having 4 to 20 carbon atoms or esters thereof are subjected to a tandem isomerization/metathesis reaction in the presence of a palladium catalyst and of a ruthenium catalyst, with the proviso that the palladium catalysts used are compounds which contain at least one structural element Pd—P(R1R2R3) where the R1-R3 radicals each independently have 2-10 carbon atoms, each of which may be aliphatic, alicyclic, aromatic or heterocyclic, with the proviso at least one of the R1-R3 radicals contains a beta-hydrogen, the palladium catalyst being used as such or generated in situ, with the proviso the process is performed in the absence of substances having a pKa of 3 or less.

    Abstract translation: 本发明的方面涉及制备包含不饱和化合物的组合物的方法，其中（A）一种或多种具有10-24个碳原子的不饱和单羧酸或这些一元羧酸的酯和（B）一种或多种不饱和二羧酸，其具有4〜 20个碳原子或其酯在钯催化剂和钌催化剂存在下进行串联异构化/复分解反应，条件是使用的钯催化剂是含有至少一种结构单元Pd-P（R 1 R 2 R 3 ）其中R 1 -R 3基团各自独立地具有2-10个碳原子，其各自可以是脂族，脂环族，芳族或杂环的，条件是至少一个R 1 -R 3基团含有β-氢，钯催化剂 原样使用或原位生成，条件是在不存在pKa为3或更小的物质的情况下进行该方法。

    Process for preparing D-glucaro-6,3-lactone
    8.
    发明授权
    Process for preparing D-glucaro-6,3-lactone 有权

    公开(公告)号：US10774058B2

    公开(公告)日：2020-09-15

    申请号：US16482100

    申请日：2018-02-07

    Applicant: BASF SE

    Inventor： Abhijeet Roy ,  Dominik Ohlmann ,  Rahul Mulay ,  Priti Kulkarni ,  Vijay Narayanan Swaminathan

    IPC: C07D307/33

    Abstract: A process for preparing D-glucaro-6,3-lactone from a salt of D-glucaric acid is provided. The process includes: adding a mineral acid to a pre-cooled solution including a salt of D-glucaric acid, water, and acetone to obtain a crude mixture; allowing the crude mixture to rise to a temperature in a range of ≥15° C. to ≤35° C. and stirring the crude mixture; filtrating the crude mixture and washing with an acetone and water solvent mixture to obtain a filtrate; concentrating the filtrate under vacuum pressure to obtain a concentrated filtrate having a water content in a range of ≥20.0 wt. % to ≤40.0 wt. %, relative to an overall weight of the concentrated filtrate; storing the concentrated filtrate at a temperature in a range of ≥0° C. to ≤5° C., and optionally repeating the concentrating and storing steps to obtain a precipitate comprising D-glucaro-6,3-lactone.

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