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    PROCESS FOR THE HYDROXYLATION OF AN AROMATIC COMPOUND
    2.
    发明申请
    PROCESS FOR THE HYDROXYLATION OF AN AROMATIC COMPOUND 审中-公开

    公开(公告)号：US20200369587A1

    公开(公告)日：2020-11-26

    申请号：US16771101

    申请日：2018-12-14

    Applicant: RHODIA OPERATIONS

    Inventor： Laurent GAREL

    IPC: C07C41/26 ,  C07C41/40

    Abstract: The present invention relates to a process for the hydroxylation of an aromatic compound comprising at least one alkoxy group, comprising a step (a) of reacting said aromatic compound comprising at least one alkoxy group with hydrogen peroxide in the presence of a catalyst, in a solvent comprising water, an alcohol, or a mixture of alcohols.

    Process for preparing mandelic aromatic compounds and aromatic aldehyde compounds
    4.
    发明申请
    Process for preparing mandelic aromatic compounds and aromatic aldehyde compounds 审中-公开
    制备扁桃酸芳香族化合物和芳族醛化合物的方法

    公开(公告)号：US20160297735A1

    公开(公告)日：2016-10-13

    申请号：US15036871

    申请日：2014-11-14

    Applicant: RHODIA OPERATIONS

    Inventor： Laurent GAREL ,  Flavie SARRAZIN ,  Olivier BACK ,  Kevin OLIVON ,  Mathieu PUCHEAULT

    IPC: C07C51/367 ,  C07C45/39

    CPC classification number: C07C51/367 ,  C07C45/39 ,  Y02P20/582 ,  C07C59/52 ,  C07C47/58 ,  C07C47/575

    Abstract: A process for preparing an aromatic compound or compounds where at least one mandelic group —CHOH—COOH is described, comprising a reaction for condensation of at least one aromatic compound with glyoxylic acid or derivatives thereof, wherein said condensation reaction is carried out substantially in the absence of any acid or any base added to the reaction medium. The condensation reaction is followed by an oxidation reaction in order to obtain aromatic aldehyde.

    Abstract translation: 一种制备芳族化合物或其中描述至少一种扁桃基-CHOH-COOH的化合物的方法，包括至少一种芳族化合物与乙醛酸或其衍生物缩合的反应，其中所述缩合反应基本上在 不存在加入到反应介质中的任何酸或任何碱。 缩合反应后进行氧化反应，得到芳族醛。

    Method for separating mandelic compounds in salified form and use of same for preparing aromatic aldehyde
    6.
    发明申请
    Method for separating mandelic compounds in salified form and use of same for preparing aromatic aldehyde 有权
    以成盐形式分离扁桃状化合物的方法和用于制备芳族醛的方法

    公开(公告)号：US20160318839A1

    公开(公告)日：2016-11-03

    申请号：US15105047

    申请日：2014-12-14

    Applicant: RHODIA OPERATIONS

    Inventor： Laurent GAREL ,  Stephanie NORMAND ,  Stephanie FOUCHER ,  Dominique HORBEZ ,  Morad ASSAM

    IPC: C07C51/47 ,  C07C45/61 ,  C07C45/29 ,  B01D15/08 ,  C07C51/41

    CPC classification number: C07C51/47 ,  B01D15/08 ,  C07C45/29 ,  C07C45/512 ,  C07C45/61 ,  C07C51/367 ,  C07C51/41 ,  C07C59/52 ,  C07C47/58

    Abstract: The invention describes a method for separating a mandelic compound in salified form from an aqueous reaction medium resulting from the condensation reaction of a hydroxylated aromatic compound with glyoxylic acid in a basic medium, said method comprising a) decanting said reaction medium in such a way as to recover an organic phase formed from the excess of said aromatic compound and an aqueous phase formed from said mandelic compound and a quantity of the excess of said aromatic compound and b) bringing said aqueous phase into contact with an adsorbent support, resulting in the selective adsorption of said aromatic compound and the recovery of an aqueous flow comprising said mandelic compound in salified form, which is subjected to an oxidation step before being converted into hydroxyaromatic aldehyde by electrodialysis.

    Abstract translation: 本发明描述了一种从碱性介质中羟基化芳族化合物与乙醛酸的缩合反应产生的水性反应介质中分离成盐形态的扁桃酸化合物的方法，所述方法包括：a）将所述反应介质以如 回收由过量的所述芳族化合物形成的有机相和由所述扁桃酸化合物形成的水相和一定量的所述芳族化合物，以及b）使所述水相与吸附剂载体接触，导致选择性 所述芳香族化合物的吸附和含有所述扁桃酸化合物的盐水形式的水溶液的回收，所述盐水经过氧化步骤，然后通过电渗析转化为羟基芳族醛。

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