A synthetic protocol for the expedient construction of 5‐methylene‐1H‐pyrrol‐2(5H)‐one derivatives through rhodium‐catalyzed [4+1] annulation with gem‐difluoroacrylate as the C1 component was reported. By taking advantage of the twofold C−F bond cleavage occurring during the annulation, this reaction not only allows the synthesis of these heterocyclic compounds under overall oxidant‐free conditions
据报道,通过
铑催化的[4 + 1]环化,使用宝石二
氟丙烯酸酯作为C 1组分,可方便地构建5-亚
甲基-1 H-
吡咯-2(5 H)-one衍
生物的合成方案。通过利用在成环过程中发生的两倍CF键断裂,该反应不仅可以使这些
杂环化合物在完全无
氧化剂的条件下合成,而且还可以实现立体定向转化。所采用的非常温和的反应条件可确保与多种合成上有用的官能团兼容。