1H-imidazole; iodine; triphenylphosphine in dichloromethane T=20°C; Inert atmosphere;

1H-imidazole; iodine in diethyl ether; acetonitrile T=0 - 20°C;

sodium iodide in acetone T=20°C; 16 h;

iodine; triphenylphosphine in dichloromethane

1: NaOH / H2O; dioxane / 16 h / 20 °C 2: NaI / acetone / 18 h / 20 °C View Scheme

1.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 - 20 °C / Inert atmosphere 1.2: 18 h / 20 °C / Inert atmosphere 2.1: 2,6-dimethylpyridine; Ir[(dF(CF3)ppy)2(dtbbpy)]PF6; trichloromonobromomethane; water / acetonitrile / 12 h / Inert atmosphere; Irradiation View Scheme