1: bis(diisopropylamino)phosphanylnitrile; Cp2ZrPh2 in toluene 0.75 h; Heating; 2: Diphenylphosphinoacetylene in toluene T=20°C; 0.25 h; 3: chloro-diphenylphosphine in toluene 2 h; Further stages.;

1: bis(diisopropylamino)phosphanylnitrile; Cp2ZrPh2 in toluene 0.75 h; Heating; 2: methanol in toluene T=20°C; 0.25 h; 3: chloro-diphenylphosphine in toluene 2 h; Further stages.;