1: 86 percent / potassium hydroxide / 8 h / anodic oxidation in single-cell, costant current (2 amp) using a platinum gauze anode 2: 83 percent / H3O(1+) / 0 °C 3: 2.) p-TosH / 2.) THF, reflux View Scheme

1: 83 percent / H3O(1+) / 0 °C 2: 2.) p-TosH / 2.) THF, reflux View Scheme

toluene-4-sulfonic acid 2.) THF, reflux; Yield given. Multistep reaction;