Synthesis of bi- and tricyclic arylboronates viaCpRuCl-catalyzed cycloaddition of α,ω-diynes with ethynylboronateElectronic supplementary information (ESI) available: experimental procedures and compound characterization data. See http://dx.doi.org/10.1039b506977g

In the presence of 5–10 mol CpRuClcod, 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.