potassium tert-butylate in tetrahydrofuran T=0°C; 0.5 h; Title compound not separated from byproducts;

1: 16 percent Spectr. / t-BuOK / tetrahydrofuran / 0.5 h / 0 °C 2: 90 percent Turnov. / t-BuOK / tetrahydrofuran / 0.75 h / 0 °C View Scheme