1: tritilation 2: 73 percent / t-butylhydroperoxide / VO(acac)2 / toluene 3: 60 percent / tetrabutylammonium iodide 4: 30 percent / KHF2 / ethane-1,2-diol / 160 °C 5: 56 percent / ethyldiisopropylamine / CH2Cl2 6: hydrogen, H(1+) / Pd/C / ethyl acetate 7: triethylamine, 4-dimethylaminopyridine 8: 18 percent / potassium carbonate / dimethylsulfoxide / 80 °C 9: 1 M HCl / Heating View Scheme