In the presence of a catalytic amount of KI in combination with H2O2, a convenient catalytic procedure has been developed for the direct preparation of acetoxylactones from alkenoic acids in acetic acid at room temperature which provides the corresponding cyclic products in good yields. This novel methodology mediated by an in situ generated hypervalent iodine intermediate extends the catalytic application of KI in organic synthesis.
在催化量的 KI 与 H2O2 的共同作用下,开发出了一种方便的催化程序,可在室温下直接从乙酸中的烯酸制备乙酰氧基内酯,并能以良好的收率提供相应的环状产物。这种由原位生成的高价碘中间体介导的新方法扩展了 KI 在有机合成中的催化应用。