Synthesis of bi- and tricyclic arylboronates via Cp*RuCl-catalyzed cycloaddition of α,ω-diynes with ethynylboronate†
Abstract
In the presence of 5–10 mol% Cp*RuCl(cod), 1,6- and 1,7-diynes were allowed to react with an ethynylboronate at ambient temperature to give rise to bi- and tricyclic arylboronates in 64–93% isolated yields.