Activation of alkynes leading to oxygen incorporation α to the triple bond is observed when [Fe(CO)5], [Co2(CO)8], and an internal alkyne are heated in refluxing acetone; evidence for the possible formation of a mixed acetylenic iron–cobalt cluster has also been obtained.
S. Aime, L. Milone and D. Osella, J. Chem. Soc., Chem. Commun., 1979, 704 DOI: 10.1039/C39790000704
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