1: 90 percent / LAH / diethyl ether / 2 h / 0 - 20 °C 2: 89 percent / pyridinium chlorochromate; silica gel / CH2Cl2 / 0.5 h / 20 °C 3: 86 percent / Li / 1 h / 0 - 20 °C / sonic irradiation 4: 90 percent / Cl2(PCy3)2Ru=CHPh / CH2Cl2 / 5 h / 20 °C 5: 96 percent / pyridinium chlorochromate; silica gel / CH2Cl2 / 2 h / 20 °C 6: 98 percent / DBU / CH2Cl2 / 6 h / 20 °C 7: 95 percent / Zn; KOH / ethanol; H2O / 10 h / Heating 8: 88 percent / CeCl3 / tetrahydrofuran / 3 h / 0 - 20 °C 9: POCl3; pyridine / CH2Cl2 / 3 h / 0 - 20 °C View Scheme