IL can function as both catalyst and solvent
In a series of arene exchange reactions on ferrocene, an acidic [bmim]+ chloroaluminate IL was used where [Al2Cl7]- is the active Lewis acid.a
Reactant Arene Product Yield (%)
Benzene Fe(C5H5)(C6H6) 53
Toluene Fe(C5H5)(C6H6Me) 64
Napthalene Fe(C5H5)(C10H8) 53
Conventional problems with these reactions (e.g., lower yields with solid arenes) are eliminated.
a P. Dyson, et al. J. Chem. Soc.,Dalton Trans 1997, 3465