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    Catalysed acylation of alkylated benzene derivatives
    1.
    发明授权
    Catalysed acylation of alkylated benzene derivatives 有权
    烷基化苯衍生物的催化酰化

    公开(公告)号：US07087791B2

    公开(公告)日：2006-08-08

    申请号：US10678902

    申请日：2003-10-02

    申请人： Raksh Vir Jasra ,  Beena Tyagi ,  Yogiraj Mansukhlal Badheka

    发明人： Raksh Vir Jasra ,  Beena Tyagi ,  Yogiraj Mansukhlal Badheka

    IPC分类号： C07C45/00

    CPC分类号： C07C45/46 ,  B01J21/16 ,  B01J29/085 ,  B01J29/18 ,  B01J29/7057 ,  B01J29/90 ,  Y02P20/584 ,  C07C49/76

    摘要： An ecofriendly process for acylation of an alkylated benzene derivative has increased selectively towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenze, dimethylsulfolane, and/or benzotrile, and a crystalline alumino silicate catalyst having general formula M2/nO.Al2O3.xSiO2.wH2O, wherein M is an alkali cation, a rare earth cation, and/or a proton, wherein the Si/Al ratio is in the range of 5.5 to 20, wherein the step of reacting is performed at temperature between 80° to 140° C. for 5 to 25 hours. In a further step, the solid catalyst is separated from the reaction mixture of step, and in yet another step, the acylated alkyl benzene derivative is separated from the mixture.

    摘要翻译： 烷基化苯衍生物酰化的环保方法选择性地向对位增加，并且包括在硝基苯，二氯苯，二甲基环丁砜和/或苯并吡喃存在下使烷基化苯衍生物与酰化剂反应的步骤，以及结晶铝硅酸盐 具有通式M 2 / n O的催化剂。Al 2 O 3·xSiO 2·w < 2 O，其中M是碱性阳离子，稀土阳离子和/或质子，其中Si / Al比在5.5至20的范围内，其中反应步骤在 80°至140℃，持续5至25小时。 在另一步骤中，将固体催化剂与步骤的反应混合物分离，在另一步骤中，将酰化烷基苯衍生物与混合物分离。

    Clay based catalytic process for the preparation of acylated aromatic ethers
    2.
    发明授权
    Clay based catalytic process for the preparation of acylated aromatic ethers 有权
    用于制备酰化芳族醚的基于粘土的催化方法

    公开(公告)号：US06730814B1

    公开(公告)日：2004-05-04

    申请号：US10341606

    申请日：2003-01-14

    申请人： Rakesh Vir Jasra ,  Muthusamy Sengodagounder ,  Yogiraj Mansukhlal Badheka

    发明人： Rakesh Vir Jasra ,  Muthusamy Sengodagounder ,  Yogiraj Mansukhlal Badheka

    IPC分类号： C07C4546

    CPC分类号： C07C45/46 ,  C07C49/84

    摘要： This invention relates to a process for the preparation of acylated aromatic ethers, in particular the acylation of anisole (methoxybenzene) and veratrole (1,2-dimethoxybenzene) for the preparation of corresponding acylated aromatic ether, namely, p-methoxyacetophenone and 3,4-dimethoxyacetophenone respectively, using clay based heterogeneous catalysts, and their lanthanide exchanged forms at moderate temperature and pressure with high selectivity.

    摘要翻译： 本发明涉及一种制备酰化芳香醚的方法，特别是苯甲醚（甲氧基苯）和藜芦醚（1,2-二甲氧基苯）的酰化用于制备相应的酰化芳族醚，即对甲氧基苯乙酮和3,4 分别使用粘土基非均相催化剂和它们的镧系元素在中等温度和高压下以高选择性交换形式。