1: 1.) methyl triflate, 4 Angstroem molecular sieves; 2.) NaBH4; 3.) CuO/CuCl2*2H2O / 1.) MeCN, r.t., 30 min; 2.) MeOH, r.t., 10 min; 3.) MeCN/H2O, 15 min, r.t. 2: KMnO4, potassium phosphate / 2-methyl-propan-2-ol; H2O / 0.25 h / Ambient temperature View Scheme