T=455°C;

1: 54 percent / KOH / various solvent(s) / 4 h / 160 - 190 °C / 80 Torr 2: 1.) Mg, ZnCl2, 1,2-dibromoethane, 2.) Li2CuCl4 / 1.) THF, reflux, 3 h, 2.) THF, Et2O, RT, overnight 3: 80 percent Chromat. / 0.01 h / 470 °C View Scheme

1: 1.) Mg, ZnCl2, 1,2-dibromoethane, 2.) Li2CuCl4 / 1.) THF, reflux, 3 h, 2.) THF, Et2O, RT, overnight 2: 80 percent Chromat. / 0.01 h / 470 °C View Scheme

1: 36 percent / NaOAc / acetic acid / 10 h / Heating 2: Heating View Scheme

Heating; Title compound not separated from byproducts;