Supporting Information S1 Revisiting the Iridacycle‐Catalyzed Hydrosilylation of Enolizable Imines. Jorge Pèrez‐Miqueo, a Virginia San Nacianceno, a F. Borja Urquiola, a Zoraida Freixa* a,b . a. Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country (UPV‐EHU), San Sebastián, 20018, Spain. E‐mail: Zoraida_freixa@ehu.eus b. IKERBASQUE, Basque Foundation for Science, Bilbao, 48013, Spain. Fig S1. Time‐resolved 1 H NMR study of the hydrosilylation of N‐(1‐phenylethylidene)aniline using precatalyst 1 (300 MHz). Reaction conditions: 1 (0.13 mg, 0.00025 mmol), NaBArF 24 (0.46 mg, 0.0005 mmol), N‐(1‐phenylethylidene)aniline (50.9 mg, 0.2591 mmol), Et 3 SiH (50.0 μL, 0.3110 mmol), 0.7 mL CD 2 Cl 2 , internal capillary TMS (10% v/v in CDCl 3 ). Electronic Supplementary Material (ESI) for Catalysis Science & Technology. This journal is © The Royal Society of Chemistry 2018