Designed Ligands as Probes for the Catalytic Binding Mode in Mo-Catalyzed Asymmetric Allylic Alkylation We thank the National Science Foundation and the National Institutes of Health for their generous support of the work carried out at Stanford. I.H. thanks the Japan Society for the Promotion of Science for a postdoctoral fellowship. Mass spectra were provided by the Mass Spectrometry Facility at the University of California, San Francisco, which is supported by the NIH Division of Research Resources. | Synapse