The direct synthesis of isocoumarin skeletons has been realized through the Rh(III)-catalyzed [3 + 3] annulation of sulfoxonium ylides with iodonium carbenes. The synthetic protocol was constructed efficiently with broad functional group tolerance and mild reaction conditions. This reaction can be formally viewed as the result of C–H activation, carbene insertion and nucleophilic addition processes
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香豆素骨架的直接合成是通过 Rh( III ) 催化的 [3 + 3] 氧化鎓叶立德与
碘鎓卡宾环化实现的。该合成方案有效构建,具有广泛的官能团耐受性和温和的反应条件。该反应可以正式地视为 C-H 活化、卡宾插入和亲核加成过程的结果。此外,还证明了产物和克级反应的进一步转化以支持合成方案的有效性。