A treatment of ethyl bromoacetate with two molar equivalent of samarium diiodide at −50 °C for 15 min in THF produces a β-oxoester enolate equivalent; the reagent reacts with ketones or aldehydes to give δ-hydroxy-β-oxoesters in excellent yields.
将乙基
溴乙酸酯在 -50 °C 下与两摩尔当量的二
碘钕处理 15 分钟,使用 THF 作为溶剂,产生β-
氧酯烯醇等效物;该试剂与
酮或醛反应,能够以优异的产率生成δ-羟基-β-
氧酯。