perchloric acid in 1,4-dioxane T=20°C; 1 h;

1: 86 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 3.5 h / -10 - 20 °C 2: 92 percent / aq. perchloric acid / dioxane / 1 h / 20 °C View Scheme

1: 74 percent / K2CO3 / acetone / 1 h / Heating 2: 86 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 3.5 h / -10 - 20 °C 3: 92 percent / aq. perchloric acid / dioxane / 1 h / 20 °C View Scheme

1: 83 percent / BBr3 / CH2Cl2 / 2 h / 20 °C 2: 74 percent / K2CO3 / acetone / 1 h / Heating 3: 86 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 3.5 h / -10 - 20 °C 4: 92 percent / aq. perchloric acid / dioxane / 1 h / 20 °C View Scheme

1: 74 percent / K2CO3 / acetone / 1 h / Heating 2: 86 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 3.5 h / -10 - 20 °C 3: 92 percent / aq. perchloric acid / dioxane / 1 h / 20 °C View Scheme