An NHC-catalyzed [3 + 3] annulation reaction between α-bromo enals and 2-chlorocyclohexane-1,3-diones was developed for the rapid and efficient synthesis of various 4,5,6-trisubstituted α-pyrones, which are core structures in numerous natural products and synthetic bioactive molecules, in generally good to excellent yields.
开发了 NHC 催化的 α-
溴烯醛和 2-
氯环己烷-1,3-二酮之间的 [3 + 3] 环化反应,用于快速有效地合成各种 4,5,6-三取代的
α-吡喃酮,它们是核心许多
天然产物和合成
生物活性分子中的结构,通常具有良好到极好的收率。