1: 50 percent / potassium chlorate, acetic acid, osmium tetraoxide / ethanol; H2O / 24 h / Ambient temperature 2: 1.) acetic acid, water, 2.) copper sulfate, toluene-p-sulfonic acid / 1.) 1,5h, 50 deg C, 2.) 24h 3: 84 percent / pyridine View Scheme