Obtention de tetrahydrofurannes fonctionnalises lors de l'action de reactifs organometalliques sur des γ,δ-epoxycetones
作者:Maurice Chastrette、Georges P. Axiotis
DOI:10.1016/s0022-328x(00)83466-x
日期:1981.2
The reaction of organolithium and organomagnesium reagents with γ,δ-epoxy ketones affords functionalized tetrahydrofurans by intramolecular cyclisation of an intermediate addition alkoxide. This cyclization is regioselective: the formation of a tetrahydrofuran is always observed while the tetrahydropyran isomer is never obtained. The oxiran ringopening is stereospecific and occurs with inversion of