A room-temperature C–H bond functionalization of benzamides has been developed by merging a photocatalyst with a cobalt catalyst for the synthesis of isoindolone spirosuccinimides. The reaction proceeds in aerobic conditions and does not require any sacrificial external oxidants such as Ag(I) or Mn(III) salts. Visible light activates the photocatalyst, and it acts as an electron-transfer reagent and
苯甲酰胺的室温C–H键官能化已通过将光催化剂与
钴催化剂合并用于合成异
吲哚酮螺琥珀
酰亚胺而得到开发。反应在有氧条件下进行,不需要任何牺牲性外部氧化剂,例如Ag(I)或Mn(III)盐。可见光激活了光催化剂,它起着电子转移试剂的作用,并通过调节
钴络合物的氧化态来帮助实现基本的有机
金属步骤。这种C–H键官能化和螺环化显示出较宽的底物范围和良好的官能团耐受性。实验结果提出了可能的反应机理,表明C–H键的活化是不可逆的,而不是速率决定步骤。