The first preparation of beta-lactones by radical cyclizationCastle, K., Hau, C.S., Sweeney, J.B. and Tindall, C. (2003) The first preparation of beta-lactones by radical cyclization. Organic Letters, 5 (5). pp. 757-759. ISSN 1523-7060 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1021/ol0340235 Abstract/Summarybeta-Lactones have, for the first time, been prepared by 4-exo-trig radical cyclization. Thus, alpha-ethenoyloxy radicals react in the presence of tributylstannane in a photothermal process to give beta-lactones. Highest yields were obtained when groups capable of stabilizing a carboncentered radical were present at the 3-position of the alkenoate acceptor.
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