1: 98 percent / H2 / Pd/C 2: 93 percent / i-Bu2AlH 3: 89 percent 4: 72 percent / Pb(OAc)4 5: 89 percent / xylene / 140 °C 6: 97 percent / H2 / Pd/C 7: 93 percent / Ba(OH)2*8H2O / ethanol 8: 88 percent / NaIO4/H2O View Scheme