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.
Dols Paul P. M. A., Arnouts Esther G., Rohaan Johannes, Klunder Antonius +, Tetrahedron, 50 (1994) N 11, S 3473-3490
作者:Dols Paul P. M. A., Arnouts Esther G., Rohaan Johannes, Klunder Antonius +