Jean-Yves MCrour*, Beatrice Malapel and Eric Desarbre ... Institut de Chimie Organique et Analytique associC au CNRS, BP 6759, UniversitC d'OrlCans, 45067 OrlCans CCdex 02, France ... Abstract: Acetylation of 2-methyl- 1-phenylsulfonylindole with an excess of aluminium chloride and acetic anhydride afforded exclusively 6-acetyl-3-chloro- 2-methylindole and 6-acetyl-3-chloro -2-methyl- 1 -phenylsulfonylindole . ... Regioselective electrophilic substitution of indolic ...