in diethyl ether; benzene T=-5 - 0°C; 0.25 h;

in ethanol; sulfuric acid T=30°C; electrochemical reaction: mercury pool cathode, platinum anode;

sulfuric acid 1.) electrochemical reaction: mercury pool cathode, platinum anode, H2SO4, ethanol, H2O, 30 deg C, 2.) reflux, 5-6 h; Yield given. Multistep reaction;