A New Synthesis of Butadienyl- and Styrylboronic Esters:  Highly Reactive Intermediates for Suzuki Cross-Coupling

Alkoxy-functionalized butadienyl- and styrylboronic esters have been synthesized starting from α,β-unsaturated acetals. These derivatives readily cross-couple with aryl substrates, and the obtained products can be transformed under mild conditions into aromatic ketones, achieving the same result as an acylation reaction.