Stille Cross-Coupling Reactions Using Vinylcyclopropylstannanes

The Stille cross-coupling reaction between a vinylcyclopropylstannane and iodobenzene or phenol triflate provides an expedious route to 1,2-phenylvinylcyclopropanes. However, similar coupling reactions using ortho-substituted aromatic substrates also lead to butylaromatic products, resulting from competitive sp³-sp² coupling reactions.