Enantiospecific Synthesis and Allylation of All‐Carbon‐Substituted α‐Chiral Allylic Stannanes

Once difficult to obtain, the title compounds can be prepared in virtually enantiomerically pure form with a bis(triorganostannyl) zinc reagent (see scheme). Subsequent diastereoselective thermal (left) and Lewis acid promoted reactions (right) illustrate the synthetic potential of these compounds.