Department of Chemistry , University of Oslo , P. O. Box 1033, Blindern, N-0315, Oslo, Norway E-mail: l.l.gundersen@kjemi.uio.no
Abstract:
Dialkylcyclopropenones are formed in high yields when alkynes are treated with chloroform-butyllithium in THF at - 78 °C followed by acidic hydrolysis of the dichlorocyclopropene intermediates at low temperatures.