lead(IV) acetate in benzene 0.5 h;

1: 85 percent / p-toluenesulfonic acid / 3 h / 120 °C 2: 59 percent / sodium hydride / dimethylformamide / 15 h / Ambient temperature 3: 65 percent / 10percent sulfuric acid / 3 h / Ambient temperature 4: 50 percent / lead tetraacetate / benzene / 0.5 h View Scheme

1: 59 percent / sodium hydride / dimethylformamide / 15 h / Ambient temperature 2: 65 percent / 10percent sulfuric acid / 3 h / Ambient temperature 3: 50 percent / lead tetraacetate / benzene / 0.5 h View Scheme

1: 65 percent / 10percent sulfuric acid / 3 h / Ambient temperature 2: 50 percent / lead tetraacetate / benzene / 0.5 h View Scheme