1: 81 percent / diethyl ether / 1 h / Heating; room temp., 15 min. 2: 75 percent / 18percent hydrochloric acid / H2O / 1.5 h 3: 1.) ethyl chloroformate, triethylamine / 1.) benzene, ether, 0 deg C, 15 min; 2.) benzene, ether, room temp. 20 min View Scheme

1: 75 percent / 18percent hydrochloric acid / H2O / 1.5 h 2: 1.) ethyl chloroformate, triethylamine / 1.) benzene, ether, 0 deg C, 15 min; 2.) benzene, ether, room temp. 20 min View Scheme

1: 81 percent / diethyl ether / 1 h / Heating; room temp., 15 min. 2: 75 percent / 18percent hydrochloric acid / H2O / 1.5 h 3: 1.) ethyl chloroformate, triethylamine / 1.) benzene, ether, 0 deg C, 15 min; 2.) benzene, ether, room temp. 20 min View Scheme

chloroformic acid ethyl ester; triethylamine 1.) benzene, ether, 0 deg C, 15 min; 2.) benzene, ether, room temp. 20 min; Yield given. Multistep reaction;