PROCEDE DE PREPARATION DE FURFURAL
    3.
    发明公开
    PROCEDE DE PREPARATION DE FURFURAL 有权
    程序准备好文件

    公开(公告)号:EP2748153A1

    公开(公告)日:2014-07-02

    申请号:EP12750773.9

    申请日:2012-08-24

    IPC分类号: C07D307/50

    CPC分类号: C07D307/48 C07D307/50

    摘要: The invention relates to a method for producing furfural by reacting pentose in water and in the presence of carboxylic acid and a heterogeneous acid catalyst, said method being carried out in an aqueous solution of carboxylic acid as the reaction medium. The invention also relates to the production of furfural by reacting pentose in water and in the presence of carboxylic acid and a heterogeneous acid catalyst. The invention further relates to an aqueous solution of carboxylic acid rich in furfural.

    摘要翻译: 本发明涉及通过戊糖在水中和在羧酸和多相酸催化剂存在下反应来制备糠醛的方法,所述方法在作为反应介质的羧酸水溶液中进行。 本发明还涉及通过使戊糖在水中和在羧酸和多相酸催化剂存在下反应制备糠醛。 本发明还涉及富含糠醛的羧酸水溶液。

    PROCEDE DE PREPARATION DE DIALKYLOXYDIANHYDROHEXITOLS PAR ETHERIFICATION DE DIANHYDROHEXITOLS AVEC UN ALCOOL LEGER, EN PRESENCE D'UN CATALYSEUR ACIDE
    10.
    发明公开
    PROCEDE DE PREPARATION DE DIALKYLOXYDIANHYDROHEXITOLS PAR ETHERIFICATION DE DIANHYDROHEXITOLS AVEC UN ALCOOL LEGER, EN PRESENCE D'UN CATALYSEUR ACIDE 有权
    用于生产DIALKYLOXYDIANHYROHEXITOL醚化手段使用双脱水己糖稍向一个酒精使用酸催化剂

    公开(公告)号:EP2885305A1

    公开(公告)日:2015-06-24

    申请号:EP13758931.3

    申请日:2013-08-05

    IPC分类号: C07D493/04

    CPC分类号: C07D493/04

    摘要: The present invention relates to a method for preparing a dialkyloxydianhyrohexitol (dimethylisosorbide) composition by etherification of dianhydrohexitol (isosorbide). The aim of the invention is to achieve a "clean" method that avoids the use of a methylation agent such as dimethyl sulfate or methyl chloride, which generate stoechiometric quantities of salts, or expensive dialkyl-carbonates, wherein only one of the two methyl groups participates in the preparation of mixed isosorbide ethers. Said method involves using at least one O-alkylation agent and a catalyst including an acid or an acid salt, preferably a catalyst having Lewis or BrØnsted acid properties. The present invention further relates to a device for carrying out the method according to at least one of the previous claims, characterized in that said device includes a vaporization oven and a reaction oven.

    摘要翻译: 一种用于通过脱水己糖醇(异山梨醇)的醚化制备dialkyloxydianhyrohexitol(二甲基异山梨醇)组合物的方法。 的目的是实现一个“干净”方法确实避免了使用甲基化试剂:如硫酸二甲酯或氯代甲烷,哪些基因率化学计量盐的数量时,或昂贵的二烷基碳酸酯,worin仅在两个甲基基团中的一个在所述参与 制备混合的异山梨醇醚。 该方法涉及使用至少一个O-烷基化剂和催化剂包含在酸或酸的盐,优选具有路易斯或布朗斯台德酸性质的催化剂。 一种用于执行worin该装置包括一个汽化炉和炉是这样描述的反应的方法的装置。