1: 16 g / CH2Cl2 / 3 h / Heating 2: 87 percent / N-bromosuccinimide; benzoyl peroxide / CCl4 / 3 h / Heating 3: 85 percent / 2-nitropropane; sodium / ethanol / 3 h / Heating View Scheme

triethylamine T=20°C; 3 h;