1 Direct synthesis of indenes via a rhodium-catalyzed multicomponent Csp 2 -H annulation reaction Pierre Querard and Chao-Jun Li* Department of Chemistry, and FQRNT Center for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada cj.li@mcgill.ca Supplementary Information Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2018