M. Beller et al., Catalytic alkylation of aromatic amines with styrene in the presence of cationic rhodium complexes and acid, SYNLETT, (2), 1999, pp. 243-245
The first transition metal-catalyzed Friedel-Crafts alkylation of aromatic
amines with styrene is reported. ortho-alkylation of anilines occurs using
catalytic amounts of [Rh(cod)(2)]BF4/4 PPh3 and HBF4.