1: 65 percent / conc. HCl; MnO2 / tetrahydrofuran / 0.5 h / -10 °C 2: 80 percent / DMF; thionyl chloride / CHCl3 / 3 h / 20 °C 3: 40 percent / pyridine / acetonitrile / 12 h / 20 °C 4: 40 percent / sodium acetate / acetic acid / 20 h / 20 °C 5: 68 percent / sodium acetate; hydrogen / Pd(OH)2/C / ethanol / 24 h / 20 °C 6: 66 percent / NaOMe / methanol / 10 h / 20 °C 7: 60 percent / PCC; celite / CH2Cl2 / 12 h / 20 °C View Scheme