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  • Title: PdCl2-catalyzed oxidative cycloisomerization of 3-cyclopropylideneprop-2-en-1-ones.
    Author: Miao M, Cao J, Zhang J, Huang X, Wu L.
    Journal: Org Lett; 2012 Jun 01; 14(11):2718-21. PubMed ID: 22582939.
    Abstract:
    A novel PdCl(2)-catalyzed oxidative cycloisomerization of 3-cyclopropylideneprop-2-en-1-ones, providing a facile synthesis of highly strained functionalized 2-alkylidenecyclobutanones via furan-fused cyclobutene intermediates, is reported. An interesting route to 2(3H)-furanones with a spiro-cyclopropane unit from the obtained 2-alkylidenecyclobutanones via a ring-contraction rearrangement reaction is also realized.
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