1: trimethylsilylacetylene With n-butyllithium in tetrahydrofuran; hexane T=-78 - 0°C; Inert atmosphere; 2: triethylsilyl chloride in tetrahydrofuran; hexane T=-78 - 20°C; Inert atmosphere;

[{Ir(l-Cl)(CO)2}2]; N-ethyl-N,N-diisopropylamine in toluene T=80°C; 5 h; Inert atmosphere;

in deuterated toluene Title compound not separated from byproducts.;

lithium in tetrahydrofuran