Synthesis of Substituted Indenes through Iron‐Catalyzed Annulation of Benzylic Alcohols with Alkynes

Abstract

Abstract A convenient and efficient method for the synthesis of polysubstituted indenes has been developed by the iron(III) trichloride‐catalyzed tandem mono‐ and dibenzylation/cyclization reactions of benzylic alcohols with alkynes. This method is featured with the easily available starting materials, cheap catalyst, simple manipulation and mild conditions.