preparation of α-hydroxy allylic thioesters via a Lewis base-catalyzed tandem isomerization/allylic alkylation process is reported. The resulting allylic thioesters can serve as valuable scaffolds to undergo a stereoselective intramolecular cyclization to deliver 2,7-dioxabicyclo[2.2.1]heptan-3-one derivatives in a catalytically atom-economic fashion.
报道了通过路易斯碱催化的串联异构化/烯丙基烷基化过程有效制备α-羟基烯丙基
硫酯的新方案。所得的烯丙基
硫代酯可以用作有价值的支架,以进行立体选择性的分子内环化,以催化原子经济方式递送2,7-二氧杂双环[2.2.1]庚-3-酮衍
生物。