A Convenient Access to γ‐Lactones from
<i>O</i>
‐Allyl‐α‐Bromoesters using a One‐Pot Ionic–Radical–Ionic Sequence
作者:Romain Bénéteau、Jacques Lebreton、Fabrice Dénès
DOI:10.1002/asia.201200212
日期:2012.7
α‐bromo ester precursors with DIBAL‐H and radical cyclization of the resulting O‐aluminum acetals, a preparative in‐situ Oppenauer‐type oxidation of the cyclic O‐aluminum acetal using simple aldehydes or ketones gives access to γ‐lactones in high yields.