1: H2SO4 / 2 h / Heating 2: 6.22 g / N-bromosuccinimide; benzoyl peroxide / CCl4 / 8 h / Heating 3: 90 percent / dimethylformamide / 1.5 h / 20 °C 4: 92.8 percent / HCl / 1 h / Heating 5: 94 percent / H2 / Pd/C / ethanol; CH2Cl2 / 20 °C / ambient pressure 6: 55 percent / potassium tert-butoxide / benzene / 0.5 h / Heating 7: 73 percent / sodium chloride; water / dimethylsulfoxide / 2.5 h / 150 °C View Scheme