Tricyclo[5.2.1.02,6]decadienone epoxides: rigid, highly congested α,β-epoxycyclopentanones with distinctive chemical behavior.
作者:J.H.M. Lange、N.A.J.M. Sommerdijk、P.P.M.A. Dols、E.G. Arnouts、A.J.H. Klunder、B. Zwanenburg
DOI:10.1016/0040-4039(91)80707-d
日期:1991.6
Tricyclodecadienone epoxides 5 do not form an enolate on treatment with lithium diisopropyl amide, but instead undergo an unusual stereoselective beta-hydride transfer leading to alcohols 6. The same type of epoxy endo-alcohol was obtained from parent epoxy ketone 5 on reaction with metal hydrides and organolithium reagents. These alcohols readily undergo an intramolecular epoxide migration by a Payne-type rearrangement, to give endo-epoxides 9.