1: 74 percent / N-bromosuccinimide, benzoyl peroxide / CCl4 / 0.5 h / Heating 2: NBS, K2CO3, benzoyl peroxide / CCl4 / 4 h / Heating 3: 1) AgCO3; 2) triethylamine / 1) H2O, dioxane, r.t., 48 h; 2) H2O, dioxane, r.t., 36 h 4: 94 percent / K acetate, Pd/C / H2O; methanol 5: 71 percent / chromic anhydride-pyridine complex / 24 h / 40 °C 6: NH2OH / ethanol 7: 1) acetic anhydride, pyridine; 2) conc. ammonia / 2) CH3OH 8: CF3COOH / 2 h / 60 °C 9: cc. NH3 / dioxane / 2 h / 60 °C View Scheme