hydrogen cation in water acidic hydrolysis;;

hydrogenchloride in methanol in boiling methanol containing small amounts of HCl;;

reduction;;

potassium permanganate in water oxidn. of 1.2-bis-acetoxymethyl-1.2-dicarba-closo-dodecaborane (prepd. from decaborane(14) and liq. 2-butyne-1.4-dioldiacetate) with aq. alkaline KMnO4-soln.;;