1: 93 percent / H2 / 5percent Pd/C / methanol / 2 h / 760 Torr / Ambient temperature 2: NaBH4 / methanol / 2 h / Ambient temperature 3: pyridine, DMAP / CH2Cl2 / 6 h / Ambient temperature 4: 68 percent / n-Bu3SnH, AIBN / toluene / 3 h / Heating 5: 100 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 6 h / Ambient temperature 6: 100 percent / Et3N, DMAP / CH2Cl2 / 2 h / 0 °C 7: 89 percent / DBU / toluene / 18 h / 100 °C View Scheme