反应条件
1-ethyl-3-methylimidazolium iodide-AlCl3 (argon); very slow addn. of AlCl3 to 1-ethyl-3-methylimidazolium iodide, addn. of ferrocene to the ionic liquid, stirring (10 min), ice bath (0°C), addn. of BzCl, stirring (0°C, 2 h), quenching (2 M HCl); extraction (CH2Cl2), drying (MgSO4), concn. (vac.), column chromy. (SiO2, hexanes/ethyl acetate, 10:1 to 1:1);
