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Keywords:

  • carbonylation;
  • C[BOND]C activation;
  • cyclization;
  • regioselectivity;
  • rhodium

Abstract

Thumbnail image of graphical abstract

Efficient route: A novel RhI-catalyzed regio- and stereospecific carbonylation reaction of (1-alkynyl)cyclopropyl ketones by selective activation of a carbon[BOND]carbon σ bond of the cyclopropane ring was demonstrated (see scheme). This method provides a general, efficient, stereoselective route to synthesise 1,3,5-trisubstituted and 1,3,5,6-tetrasubstituted 5,6-dihydrocyclopenta[c]furan-4-one with convertible functional groups.