Fig. 3: Origin and analysis of the stereoselectivity model.
From: Iridium-catalyzed enantioconvergent hydrogenation of trisubstituted olefins

a Coordination of the ligand and the substrate to the iridium center. b Quadrant model based on the steric environment of the ligand around the coordinated olefin. c Predicted and experimentally observed stereochemical outcome for the hydrogenation of enones.