Preference for 6-Exo-Trigonal closures of ω-hydroxy-αβ-unsaturated esters
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 3,p. 77
- https://doi.org/10.1039/c39770000077
Abstract
Methyl 5-hydroxy-2-methylenevalerate (3) under basic conditions cyclises preferentially to α-methylene-δ-valerolactone (4) by a 6-Exo-Trig process which is a faster reaction than the alternative 6-Endo-Trig mode of ring closure.Keywords
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