TRICHLOROLANTHANOID(LnCl3)-CATALYZED FRIEDEL-CRAFTS ALKYLATION REACTIONS

Article abstract of DOI:10.1246/cl.1986.357

The usual Friedel-Crafts catalysts cannot be re-used after aqueous work-up.An alternative catalyst, based on rare earths has been found, which serves as an efficient Friedel-Crafts catalyst for alkylation of arenes by alkyl halides, and can be re-used after the reaction.Typical examples are shown in the reaction of benzene with benzyl halides using all of the rare earth trichlorides as catalyst, except PmCl3.