This illustrates that (1) a new carbon-carbon bond is formed in good yield even though, in this particular case, it produces a quaternary center and (2) the double bond in the newly formed ring is at a predefined position, ready for further elaborati~n.~~ Studies of the cyclization process with substituents other than alkyl on the radical center and of other means of generating the required vinyl radicals are in progress. ... Acknowledgment. We thank the National Institutes of ...
