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Synlett 1991; 1991(1): 56-57
DOI: 10.1055/s-1991-20628
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Nickel-Catalyzed Cyclopropanation of Alkenes via Methylene Transfer from Lithiated tert-Butyl Methyl Sulfone

Yonghua Gai* , Marc Julia, Jean-Noel Verpeaux
  • *Laboratoire de Chimie de l'Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris Cedex 05, France
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07. März 2002 (online)

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tert-Butylsulfonylmethyllithium, prepared from methyllithium and tert-butyl methyl sulfone, is shown to be a methylene-transfer reagent toward nonactivated olefins under catalysis by nickel(II) acetylacetonate. Terminal alkenes are much more reactive than 1,2-disubstituted ones.