H. Kotsuki et al., SCANDIUM(III) TRIFLUOROMETHANESULFONATE-CATALYZED FRIEDEL-CRAFTS ALKYLATION OF AROMATIC-COMPOUNDS WITH SECONDARY ALCOHOL METHANESULFONATES, Synlett, (3), 1998, pp. 255-256
Scandium(III) triflate was found to be an efficient catalyst for the F
riedel-Crafts alkylation of aromatic compounds with methanesulfonates
derived from secondary alcohols; the catalyst can be reused without a
significant loss of activity.