1: β-(2,4-dinitrophenyl)ethyl nitrate With sodium hydroxide in ethanol T=18 - 20°C; Hydrolysis; 0.75 h; 2: 1-nitro-4-vinyl-benzene With bromine in dichloromethane Bromination;

diethyl ether; bromine

1.1: 82 percent / Et3N / ethanol / 5.5 h / Heating 2.1: NaOH / ethanol / 0.75 h / 18 - 20 °C 2.2: 95 percent / bromine / CH2Cl2 View Scheme