magnesium iodide in carbon disulfide T=0°C; 2 h; Yield given;

1: N,N-diisobutyl-2,4-dimethyl-3-pentylamine / CH2Cl2 / 12 h / 0 °C 2: MgI2 / CS2 / 2 h / 0 °C View Scheme

1,8-diazabicyclo[5.4.0]undec-7-ene in dimethyl sulfoxide T=100°C; 0.333333 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;