tetraethylammonium p-toluenesulfonate; ammonium chloride in methanol T=5 - 10°C; Reduction; Electrochemical reactionPt(-)-C(+) electrodes, divided cell;

1.) irradiation, diethyl ether, 6.3 h, -30 deg C, 2.) 20 deg C, trifluoracetic acid; Yield given. Multistep reaction;