rac-6 in the Suzuki-Miyauracoupling of aryl bromides with arylboronic acids. The catalyst proved also to be active for the coupling of more challenging, bulky substrates such as 1-bromo-2-methylnaphthalene and naphthylboronic acid at relatively mild temperatures (40–70 °C) and low loadings (0.1–0.5 mol%). Experiments carried out with various amounts of water highlighted the role of water on both activity