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    PROCESSES AND CATAYLSTS FOR THE SELECTIVE HYDROGENATION OF COMPOUNDS HAVING CARBONYL CARBON ATOMS
    2.
    发明申请
    PROCESSES AND CATAYLSTS FOR THE SELECTIVE HYDROGENATION OF COMPOUNDS HAVING CARBONYL CARBON ATOMS 有权

    公开(公告)号：US20240368100A1

    公开(公告)日：2024-11-07

    申请号：US18775179

    申请日：2024-07-17

    Applicant: ARCHER-DANIELS-MIDLAND COMPANY

    Inventor： James Brazdil ,  Chi-Cheng Ma

    IPC: C07D307/42 ,  B01D3/40 ,  C07C45/64

    Abstract: Selective hydrogenation processes are disclosed that can upgrade impure feeds, such as those obtained from biomass and containing a number of small (e.g., 2-6 carbon atom) molecules having aldehyde and/or ketone carbon atoms. For example, whereas glycolaldehyde and its methylated derivative, hydroxyacetone (acetol) are both high value intermediates for certain downstream processing reactions, they are normally recovered in a condensate from pyrolysis of carbohydrates (e.g., aldose-containing sugars) together with glyoxal and its methylated derivative, pyruvaldehyde. The selective hydrogenation of these compounds bearing two carbonyl carbon atoms, without over-hydrogenation to ethylene glycol and propylene glycol, can increase the concentration of the desired intermediates. These beneficial effects of selective hydrogenation may be achieved through the use of a hydrogenation catalyst comprising noble metals such as Ru and Pt.

    Method for producing purified dialkyl-furan-2,5-dicarboxylate
    6.
    发明授权
    Method for producing purified dialkyl-furan-2,5-dicarboxylate 有权

    公开(公告)号：US11603360B2

    公开(公告)日：2023-03-14

    申请号：US16914618

    申请日：2020-06-29

    Applicant: Eastman Chemical Company

    Inventor： Mesfin Ejerssa Janka

    IPC: C07D307/68 ,  C07D307/42 ,  B01D3/06 ,  C07B63/00 ,  C07B33/00 ,  C07B63/02 ,  B01D3/14 ,  B01D3/00

    Abstract: Disclosed is a purified dialkyl furan dicarboxylate (DAFD) vapor composition containing at least 99.5 wt. % DAFD; 5-(alkoxycarbonyl) furan-2-carboxylic acid (ACFC) that, if present, is present in an amount of not more than 1000 ppm, alkyl-5-formylfuran-2-carboxylate (AFFC) that, if present, is present in an amount of not more than 1000 ppm, 5-(dialkoxymethyl)furan-2-carboxylic acid (DAFCA) that if present, is present in an amount of not more than 1000 ppm, and alkyl 5-(dialkoxymethyl)furan-2-carboxylate (ADAFC) that if present, is present in an amount of not more than 1000 ppm, in each case based on the weight of the DAFD vapor composition.

    SYNTHESIS OF SUBSTITUTED FURANS
    8.
    发明申请
    SYNTHESIS OF SUBSTITUTED FURANS 有权

    公开(公告)号：US20220144791A1

    公开(公告)日：2022-05-12

    申请号：US17613899

    申请日：2020-07-20

    Applicant: BP Corporation North America Inc.

    Inventor： Liang Song ,  Christopher Phillips ,  Yang Lu ,  Joseph Binder ,  Erin Imsand

    IPC: C07D307/68 ,  C07D307/42 ,  C08G6/00

    Abstract: A method is provided of preparing a compound of formula II: where: R1 and R2 are independently selected from —CH2OR′, —CHO, —COOR′ and —H, provided that R1 and R2 are not both —H; and R′ is selected from —H and C1-6 hydrocarbyl groups, from a compound of formula I: the compounds of formulas I and II being optionally in the form of a salt. The method comprises dehydrating the compound of formula I at: a pH in the range of from 0 to 6 or 8 to 11.5; and a temperature in the range of from 10 to 80° C. The method is particularly useful for synthesizing substituted furans from compounds derived from sugars.

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