[Rh(NCMe)2(cod)][BF4] in tetrahydrofuran T=60°C; 20 h;

1.1: NaHMDS / tetrahydrofuran / -78 - 20 °C 1.2: SiO2 2.1: 82 percent / aq. HCl / dioxane / 0.67 h / 50 °C 3.1: 95 percent / pyridine; DMAP / CH2Cl2 / 1 h / 20 °C 4.1: NaIO4; RuCl3 / acetonitrile; CCl4; H2O / 6 h 5.1: 36 mg / diethyl ether; methanol; hexane / 0.5 h / 20 °C 6.1: 92 percent / NaOMe / methanol / 1 h / 20 °C View Scheme