1: 98 percent / NaI; Et3N / acetonitrile / 1 h / Heating 2: 95 percent / Cl2Ru(PCy3)(=CHPh)(N,N'-(Mes)2-imidazolidin-2-yl) / CH2Cl2 / 1 h / 50 °C 3: 81 percent / aq. NaOH / methanol / Heating View Scheme

1: 98 percent / NaI; Et3N / acetonitrile / 1 h / Heating 2: 95 percent / Cl2Ru(PCy3)(=CHPh)(N,N'-(Mes)2-imidazolidin-2-yl) / CH2Cl2 / 1 h / 50 °C 3: 81 percent / aq. NaOH / methanol / Heating 4: 94 percent / POCl3 / 1 h / Heating View Scheme