Synthesis of isoquinolones by visible-light-induced deaminative [4+2] annulation reactions
作者:Yating Zhao、Chengcheng Shi、Xing Su、Wujiong Xia
DOI:10.1039/d0cc01333a
日期:——
a metal-free approach for the synthesis of isoquinolone derivatives by means of photoinitiated deaminative [4+2] annulation of alkynes and N-amidepyridinium salts is described. This protocol exhibits a broad scope and good functional group tolerance and regioselectivity under benign reaction conditions. Preliminary studies suggest that the critical amide radical is derived from the photocatalytic cleavage
本文描述了通过炔烃和N-酰胺吡啶鎓盐的光引发的脱氨基[4 + 2]环合反应合成异喹诺酮衍生物的无金属方法。该方案在良性反应条件下表现出广泛的范围和良好的官能团耐受性和区域选择性。初步研究表明,关键的酰胺基团源自N-酰胺吡啶鎓盐的NN键的光催化裂解,该裂解增加了炔的三键并经历了环化过程,从而提供了所需的异喹诺酮。