Synthesis of Chromeno[2,3-d]imidazol-9(1H)-ones via Tandem Reactions of 3-Iodochromones with Amidines Involving Copper-Catalyzed C–H Functionalization and C–O Bond Formation
摘要:
A novel six-membered heterocyclic skeleton of imidazochromone was prepared via an efficient one-pot reaction including a key step of copper-catalyzed aerobic C-H intramolecular cycloetherification. Notably, this process does not require the presence of strong para electron-withdrawing groups on the phenol component. Also, the results of this effort show that acyl phenols containing electron-rich heterocycles participate in an efficient C-H activation/C-O formation process.
Synthesis of Chromeno[2,3-<i>d</i>]imidazol-9(1<i>H</i>)-ones via Tandem Reactions of 3-Iodochromones with Amidines Involving Copper-Catalyzed C–H Functionalization and C–O Bond Formation
作者:Jia Sheng、Bo Chao、Hong Chen、Youhong Hu
DOI:10.1021/ol401966y
日期:2013.9.6
A novel six-membered heterocyclic skeleton of imidazochromone was prepared via an efficient one-pot reaction including a key step of copper-catalyzed aerobic C-H intramolecular cycloetherification. Notably, this process does not require the presence of strong para electron-withdrawing groups on the phenol component. Also, the results of this effort show that acyl phenols containing electron-rich heterocycles participate in an efficient C-H activation/C-O formation process.