1.) -78 deg C, HMPT, allowed to warm to r.t. during 1 h; 2.) reflux, 16 h; Yield given. Multistep reaction;

1: H2 / 82.3 percent Pt / ethanol; acetic acid 2: 1.) diethylether, 10 min, r.t.; 2.) diethylether, overnight, r.t.; 3.) reflux, 7 h View Scheme

1: H2 / 82.3 percent Pt / ethanol; acetic acid 2: 1.) diethylether, 10 min, r.t.; 2.) diethylether, overnight, r.t.; 3.) reflux, 7 h 3: 93 percent / NaIO4, H2 / 54.7 percent RuO2 / CCl4; H2O / 1.17 h / Ambient temperature View Scheme