boron trifluoride diethyl etherate; trifluoroperacetic anhydride; dihydrogen peroxide in dichloromethane T=0°C; 0.25 h; Title compound not separated from byproducts;

sodium hydroxide; sodium tetrahydroborate; mercury(II) diacetate 1.) THF, H2O, r.t., 15 min, 2.) 3 h; Yield given. Multistep reaction;