1: 86 percent / sodium borohydride / methanol 2: 95 percent / sodium azide / dimethylformamide 3: 90 percent / DMAP / pyridine 4: 98 percent / hydrogen / Pd/C / methanol 5: 71 percent / potassium tert-butoxide / dimethylformamide; benzene 6: 57 percent / tetrabutylammonium fluoride / tetrahydrofuran 7: 93 percent / carbon tetrabromide; triphenylphosphine / CH2Cl2 8: 80 percent / potassium tert-butoxide / dimethylsulfoxide 9: 95 percent / ozone / methanol View Scheme