typical applied unsaturated substrates include alkenes, alkynes and imines. Carbonyl is perhaps the most common unsaturated group in nature. This work demonstrates a novel CO bond formation through carbon‐centered radical addition to the carbonyl oxygen of amide or ester, in which amide and ester groups are easily activated through the radical process. EPR spectroscopy and radical clock experiments
在各种类型的自由基反应中,将碳自由基加至不饱和键是构建新
化学键的有力工具,其中典型的不饱和底物包括烯烃,
炔烃和
亚胺。羰基也许是自然界中最常见的不饱和基团。这项工作证明了通过将以碳为中心的自由基加到酰胺或酯的羰基氧上形成一种新颖的CO键,其中酰胺和酯基很容易通过自由基过程被活化。EPR光谱学和自由基钟实验支持这种转化的自由基过程,而密度泛函理论(DFT)计算则支持将以碳为中心的自由基加到酰胺或酯的羰基氧中的可能性。