in methanol; diethyl ether 2 h;

nitric acid in acetic acid T=60°C; 0.5 h;

1: 42 percent / conc. HNO3 / acetic acid / 0.5 h / 60 °C 2: 63 percent / 10percent Na2S2O4 / ethanol / 0.75 h / Heating View Scheme

1: 42 percent / conc. HNO3 / acetic acid / 0.5 h / 60 °C 2: 63 percent / 10percent Na2S2O4 / ethanol / 0.75 h / Heating 3: 84 percent / ethyl acetate / 1.) 3 h, reflux, 2.) 12 h, room temp. View Scheme

1: 42 percent / conc. HNO3 / acetic acid / 0.5 h / 60 °C 2: 63 percent / 10percent Na2S2O4 / ethanol / 0.75 h / Heating 3: 84 percent / ethyl acetate / 1.) 3 h, reflux, 2.) 12 h, room temp. 4: 30 percent / NaI / acetone / 2 h / Ambient temperature View Scheme