Radical [n + 1] annulations with sulfur dioxide.

J Org Chem

Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.

Published: December 2005

[reaction: see text] A new methodology for [n + 1] radical annulation using sulfur dioxide as a geminal radical acceptor/donor is presented. This methodology provides a novel route to the formation of five-, six-, and seven-membered cyclic sulfones utilizing a radical chain mechanism under very mild conditions.

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http://dx.doi.org/10.1021/jo052035tDOI Listing

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