Regioselective ortho Alkylation of Nitro Indole, Carbazole, Benzothiophene and Benzofuran.

Abstract Substituted indoles, carbazoles, benzothiophenes and benzofurans are important motifs in the pharmaceutical industry. Herein we report a novel, regioselective method to introduce alkyl substituents into position ortho of nitro groups by the addition of a Grignard reagent followed by subsequent oxidation with DDQ.