1: dicobalt octacarbonyl; 1-n-heptyne; N,N,N'-trimethyl-N'-allylthiourea With 1,1,3,3-tetramethyl-2-thiourea in toluene Pauson-Khand reaction; 0.0833333 h; Inert atmosphere; 2: carbon monoxide in toluene T=110°C; Pauson-Khand reaction; P=2250.23 Torr; 24 h; Autoclave;