A copper(<scp>ii</scp>)-catalyzed annulative formylation of <i>o</i>-alkynylanilines with DMF: a single-step strategy for 3-formyl indoles
作者:Balaji Ganesan、Gopal Chandru Senadi、Bing-Chun Guo、Min-Yuan Hung、Wei-Yu Lin
DOI:10.1039/c8ra09214a
日期:——
developed for synthesizing multisubstituted 3-formyl indole scaffolds. This one-pot reaction proceeds through a cascade 5-endo-dig cyclization followed by formylation to construct 1,2-disubstituted 3-formyl indoles. The key aspects of this synthesis method are the broad substrate scope (with 38 examples), and well tolerating various functional groups. In addition, a detailed mechanism has been proposed, where
在本文中,铜( II ) 催化的邻炔基苯胺与二甲基甲酰胺(DMF) 在氧气存在下的反应已被开发用于合成多取代的3-甲酰基吲哚支架。这种一锅法反应通过级联 5- endo -dig 环化然后甲酰化来构建 1,2-二取代的 3-甲酰基吲哚。这种合成方法的关键方面是广泛的底物范围(38 个例子),以及对各种官能团的耐受性。此外,还提出了一种详细的机制,其中 DMF 可以作为碳源,用于所得吲哚衍生物的原位C3 甲酰化。