tetrakis(triphenylphosphine) palladium(0) in acetic acid T=80°C; 0.5 h;

tetrakis(triphenylphosphine) palladium(0); diethylzinc; ammonium chloride 1.) Et2O, 3 min, 2.) Et2O, 1 h, reflux, 3.) Et2O, 0 deg C; Yield given. Multistep reaction. Yields of byproduct given;