The regiospecific Fischer indole reaction in choline chloride.2ZnCl2 with product isolation by direct sublimation from the ionic liquid.
Calderon Morales R, Tambyrajah V, Jenkins PR, Davies DL, Abbott AP. The regiospecific Fischer indole reaction in choline chloride.2ZnCl2 with product isolation by direct sublimation from the ionic liquid. Chem Commun (Camb). 2004 Jan 21; (2):158-9.