1: 4-methyl phenyl acetylene With dicobalt octacarbonyl in acetonitrile T=20°C; Pauson-Khand reaction; 1 h; 2: N-(4-methoxyphenyl)-N-(propa-1,2-dienyl)acetamide With 4-methylmorpholine N-oxide in acetonitrile T=0°C; Pauson-Khand reaction; Molecular sieve;

4-methylmorpholine N-oxide in acetonitrile T=20°C; Pauson-Khand reaction;

4-methylmorpholine N-oxide in acetonitrile T=20°C; Pauson-Khand reaction;