C. L. Boeser, J. C. Holder, B. L. H. Taylor, K. N. Houk, B. M. Stoltz and R. N. Zare, “Mechanistic Analysis of an Asymmetric Palladium-Catalyzed Conjugate Addition of Arylboronic Acids to ß-substituted Cyclic Enones,” Chem. Sci. 6, 1917-1922 (2015).