1: 92 percent / 5percent palladium on charcoal / 1,3,5-trimethyl-benzene / 6 h / Heating 2: 67 percent / W73 Raney nickel / ethanol; H2O; toluene / 4.5 h / Ambient temperature 3: 53 percent / CSI / CH2Cl2; acetonitrile / 2.5 h / -42 °C 4: 97 percent / iodic acid/iodine, conc. sulfuric acid / CCl4; H2O; acetic acid / 24 h / Ambient temperature 5: 99.5 percent / NaOH, tetrabutylammonium hydrogen sulfate / CH2Cl2 / 2 h / 0 °C 6: 31.2 percent / triethylamine, palladium(II) acetate / acetonitrile / 0.67 h / 99 - 100 °C 7: 91.5 percent / NaOH, tetrabutylammonium hydrogen sulfate / CH2Cl2 / 2 h / 0 °C 8: hydrogen / PtO2 / 6 h / Ambient temperature 9: potassium hydroxide / aq. acetic acid / 4 h / 0 °C View Scheme