公开(公告)号：US20050171385A1

公开(公告)日：2005-08-04

申请号：US10678902

申请日：2003-10-02

申请人： Raksh Jasra ,  Beena Tyagi ,  Yogiraj Badheka

发明人： Raksh Jasra ,  Beena Tyagi ,  Yogiraj Badheka

IPC分类号： B01J21/16 ,  B01J29/08 ,  B01J29/18 ,  B01J29/70 ,  B01J29/90 ,  C07C45/46

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 selectivity towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenzene, dimethylsulfolane, and/or benzonitrile, and a crystalline alumino silicate catalyst having general formula M2/nO.Al2O3.x SiO2.wH2O, wherein M is an alkali cation, a rare earth cation, and/or a proton, wherein the Si/Al ration is in the range of 5.5 to 20, wherein the weight percentage of the alkali and/or lanthanide cation is between 10 to 30, and wherein the step of reacting is performed at temperature between 90° 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： 酰化烷基化苯衍生物的环保方法具有增加对对位的选择性，并且包括在硝基苯，二氯苯，二甲基环丁砜和/或苄腈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 O 3 x SiO 2 .WH