DIRECT SYNTHESIS OF γ-BUTYROLACTONES VIA γ-PHENYL SUBTITUTED BUTYRIC ACIDS MEDIATED BENZYL RADICAL CYCLIZATION
作者:N. O. Mahmoodi、M. Jazayri
DOI:10.1081/scc-100104057
日期:2001.1
Synthesis of several γ-butyrolactones with aromatic substitution at carbon 5 from comparative γ-aryl acids with 25–85% yield are covered. The straight oxidation in the presence of peroxydisulphate-copper(II)chloride system in aqueous medium was applied. The reaction is highly regioselective and leads exclusively to γ-butyrolactone, through stable benzylic radical intermediate.
涵盖了从比较 γ-芳基酸以 25-85% 的产率合成几种在碳 5 处具有芳族取代的 γ-丁内酯。在水性介质中,在过二硫酸盐-氯化铜 (II) 体系存在下进行直接氧化。该反应具有高度的区域选择性,并通过稳定的苄基自由基中间体专门生成 γ-丁内酯。