For instance, the likelihood of obtaining a reaction output of >20% yield increases from 64% to 96% when using a bulky and electron-rich co-ligand such as pivalic acid (A27), compared to that predicted for the smaller and electronically deactivated methoxyacetic acid (A6). Finally, the steric properties of the acids do not have a clear significant positive impact on enantioinduction, in contrast to some asymmetric C-H oxidation and oxygen transfer reactions, although the electronics of the acid seem to have an important role.