Energy-Transfer-Enabled Radical Acylation Using Free Alkyl Boronic Acids through Photo and NHC Dual Catalysis
作者:Wan-Cong Liu、Xiang Zhang、Lin Chen、Rong Zeng、Yuan-Hang Tian、En-Dian Ma、Ya-Peng Wang、Bin Zhang、Jun-Long Li
DOI:10.1021/acscatal.3c06027
日期:2024.3.1
for ketone synthesis. As an important coupling partner, bench-stable and commercially available alkyl boronic acids are widely used in transition metal catalysis, but they are rarely utilized as radical precursors for acylative coupling reactions. Herein, we reported an energy-transfer-enabled radical acylation using free alkyl boronic acids via NHC/photo dual catalysis. This protocol could efficiently
交叉偶联反应作为最流行的酮合成方案之一而广受好评。作为重要的偶联伙伴,实验室稳定且市售的烷基硼酸广泛用于过渡金属催化,但很少用作酰化偶联反应的自由基前体。在此,我们报道了通过 NHC/光双催化使用游离烷基硼酸实现能量转移的自由基酰化。该方案可以有效促进烷基硼酸与酰基咪唑之间的铃木型交叉偶联以及烯烃的多组分烷基酰化,从而产生具有结构多样性的各种酮。此外,酮产品可以很容易地转化为大量结构有趣的精细化学品。初步机理研究揭示了独特的自由基反应机理。