potassium hydroxide; iodine T=0 - 20°C; 1.5 h;

tetraethylammonium p-toluenesulfonate Ambient temperaturecarbon rod anode, carbon rod cathode (i.d. 6 mm); constant current: 10 mA; electricity 2.95 F/mol;

tetraethylammonium p-toluenesulfonate Ambient temperaturecarbon rod anode, carbon rod cathode (i.d. 6 mm); constant current: 10 mA; electricity 2.49 F/mol;

1: 1) sec-BuLi / 1) hexane, THF, -25 deg C, 30 min, 2a) -78 deg C, 5 min, 2b) r.t., 1 h 2: 87 percent / Et4NOTs / Ambient temperature; carbon rod anode, carbon rod cathode (i.d. 6 mm); constant current: 10 mA; electricity 2.95 F/mol View Scheme