Physical Organic Chemistry

Rather than sequential single‐electron transfer, the alkene dimerization catalyzed by a hypervalent iodine reagent is initialized by a two‐electron transfer via a trimolecular complex organized by π‐stacking interactions. This process is stepwise for the I(III) reagent and concerted for the I(V) reagent.

Does the phenomenon suggested by Thomas Cundari et al really exist?

Novel elementary steps.

To understand, and to design.