Photochemical Synthesis of Complex Carbazoles: Evaluation of Electronic Effects in Both UV‐ and Visible‐Light Methods in Continuous Flow
作者:Augusto C. Hernandez‐Perez、Antoine Caron、Shawn K. Collins
DOI:10.1002/chem.201502661
日期:2015.11.9
An evaluation of both a visible‐light‐ and UV‐light‐mediated synthesis of carbazoles from various triarylamines with differing electronic properties under continuous‐flow conditions has been conducted. In general, triarylamines bearing electron‐rich groups tend to produce higher yields than triarylamines possessing electron‐withdrawing groups. The incorporation of nitrogen‐based heterocycles, as well
在连续流动条件下,对可见光和紫外光介导的由具有不同电子性质的各种三芳基胺合成咔唑进行了评估。通常,带有富电子基团的三芳基胺往往比具有吸电子基团的三芳基胺产生更高的产率。在咔唑骨架中掺入氮基杂环以及含卤素的芳烃的耐受性良好,通常在紫外光和可见光(光氧化还原)方法之间观察到合成有用的互补性。