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  • Title: Catalytic asymmetric heterodimerization of ketenes.
    Author: Ibrahim AA, Nalla D, Van Raaphorst M, Kerrigan NJ.
    Journal: J Am Chem Soc; 2012 Feb 15; 134(6):2942-5. PubMed ID: 22283567.
    Abstract:
    In this Communication we describe an unprecedented catalytic asymmetric heterodimerization of ketenes of wide substrate scope. The alkaloid-catalyzed method provides access to ketene heterodimer β-lactones and allows even two different monosubstituted ketenes to be cross-dimerized, with excellent enantioselectivity (17 examples with ≥90% ee) and excellent heterodimer regioselectivity observed in all cases.
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