1: 0.5 h / 5 °C 2: 85.13 percent / NaIO4, KMnO4, Na2CO3 / 2-methyl-propan-2-ol; H2O / 0.5 h / Heating 3: 89.47 percent / ammonium acetate / acetic acid / 4 h / Heating 4: 79.69 percent / 88percent HCOOH, K2CO3 / dimethylformamide / 6 h / Heating 5: 40.36 percent / <C6H5Se(O)>2O / chlorobenzene / 10 h / Heating View Scheme

1: 0.5 h / 5 °C 2: 85.13 percent / NaIO4, KMnO4, Na2CO3 / 2-methyl-propan-2-ol; H2O / 0.5 h / Heating 3: 89.47 percent / ammonium acetate / acetic acid / 4 h / Heating 4: 79.69 percent / 88percent HCOOH, K2CO3 / dimethylformamide / 6 h / Heating View Scheme

T=5°C; 0.5 h; Yield given;

1: 0.5 h / 5 °C 2: 85.13 percent / NaIO4, KMnO4, Na2CO3 / 2-methyl-propan-2-ol; H2O / 0.5 h / Heating 3: 89.47 percent / ammonium acetate / acetic acid / 4 h / Heating View Scheme