Catalysis ofFriedel-Crafts Alkylation by a Montmorillonite Doped with Transition-Metal Cations
作者:Pierre Laszlo、Arthur Mathy
DOI:10.1002/hlca.19870700310
日期:1987.5.6
Catalysts are obtained by exchange of the interstitial cations in the K10 montmorillonite. They are applied to Friedel-Crafts alkylations with halides, alcohols, and olefins. They are quite effective even with unactivated hydrocarbons. Isomer distribution depends little on the catalyst used. Thermodynamic equilibration does not take place, the reactions appear to be kinetically controlled. Efficiency
通过交换K10蒙脱土中的间隙阳离子获得催化剂。它们可用于与卤化物,醇和烯烃进行的Friedel-Crafts烷基化反应。即使未活化的烃,它们也非常有效。异构体分布几乎不取决于所使用的催化剂。没有发生热力学平衡,反应似乎是动力学控制的。在均相条件下,催化剂的效率与相应的路易斯酸的效率没有明显关系,它取决于烷基化剂的性质。通常,Zr(IV)和Ti(IV)可获得最佳结果。