A. Cornelis et al., ON THE TRANSITION-STATE FOR CLAYZIC-CATALYZED FRIEDEL-CRAFTS REACTIONS UPON ANISOLE, Tetrahedron letters, 34(24), 1993, pp. 3849-3852
The activation parameters point to a strongly organized transition sta
te on the catalyst surface, with partial breaking of the carbon-leavin
g group bond in the BnCl or in the Ac2O reagent.