Palladium-catalyzed, stereoselective rearrangement of a tetracyclic allyl cyclopropane under arylation

Chem Commun (Camb). 2005 Dec 7:(45):5665-6. doi: 10.1039/b507732j. Epub 2005 Oct 14.

Abstract

The first example of a pi,sigma domino-Heck reaction under concomitant rearrangement of the tetracyclic allylcyclopropane endo,exo-bishomobarrelene (5) is reported; the stereoselective reaction proceeds via an intramolecular insertion of a primarily-formed carbopalladation intermediate into a strained cyclopropane C-C sigma-bond, giving 9.