1: 35 percent / 96percent aq. H2SO4 / 60 h / 0 °C 2: 40 percent / 90percent HNO3, 100percent H2SO4 / 1.) RT, 60 min, 2.) 75 deg C, 90 min View Scheme

1: 35 percent / 96percent aq. H2SO4 / 60 h / 0 °C 2: 40 percent / 90percent HNO3, 100percent H2SO4 / 1.) RT, 60 min, 2.) 75 deg C, 90 min 3: 97 percent / anh. ammonia / toluene; CCl4 / 0.58 h View Scheme

1: 35 percent / 96percent aq. H2SO4 / 60 h / 0 °C 2: 82 percent / 96percent aq. H2SO4, 20percent oleum, 98percent aq. hydrogen peroxide / Ambient temperature View Scheme

1: 35 percent / 96percent aq. H2SO4 / 60 h / 0 °C 2: 82 percent / 96percent aq. H2SO4, 20percent oleum, 98percent aq. hydrogen peroxide / Ambient temperature 3: 74 percent / 0.4 N ammonia in dioxane / tetrahydrofuran / 0.17 h / Ambient temperature View Scheme

sulfuric acid T=0°C; 60 h;