Alkynyl migration to carbene ligand

Thompson, D.J., Twigg, M.V., Carbonylation Direct Synthesis of Carbonyl Compounds, Plenum Press, New York, 1991. 

Colhnan, J.P., Hegedus, L.S., Norton, J.R., Finke, R.G., Principle and Applications of Organotransition Metal Chemistry, University Science Books, Mill Valley, 1987. 

Some experimental results have been presented on the basis of stereochemical studies in favor of the CO migration into metal-alkyl bond, rather than alkyl migration to CO, depending on the nature of solvent employed, (a) Flood, T.C., Campbell, K.D., Downs, 

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