The Fischer indole synthesis occurs in high yield with one equivalent of the ionic liquid choline chloride[middle dot]2ZnCl(2); exclusive formation of 2,3-disubstituted indoles is observed in the reaction of alkyl methyl ketones, and the products readily sublime directly from the ionic liquid.

The intramolecular arene-olefin photoannulation reaction of diastereopure substrates and gave diastereopure and whose structures were determined by spectroscopic methods and confirmed by X-ray crystallography.

Liquid. -The Fischer indole synthesis occurs in high yield with one equivalent of the ionic liquid choline chloride·2ZnCl2. Exclusive formation of the 2,3-disubstituted indoles is observed in the reaction of alkyl methyl ketones. -(MORALES, R. C.; TAMBYRAJAH, V.; JENKINS*, P. R.; DAVIES, D. L.; ABBOTT, A. P.; Chem. Commun. (Cambridge) 2004, 2, 158-159; Dep. Chem., Univ. Leicester, Leicester LE1 7RH, UK; Eng.) -M. Paetzel 19-107