1,1′-Bis[6-(trifluoromethyl])benzotriazolyl] carbonate (BTBC) was prepared from 1-hydroxy-6-trifluoromethylbenzotriazole and trichloromethyl chloroformate (trichloromethyl carbonochloridate). The reaclion of BTBC and alcohols afforded the corresponding active carbonates which were converted into the corresponding carbamates and carbonates.