Sequential Copper-Catalyzed Sonogashira Coupling, Hydroamination and Palladium-Catalyzed Intramolecular Direct Arylation: Synthesis of Azepino-Fused Isoindolinones
A sequential copper-catalyzed Sonogashiracoupling followed by intramolecular hydroamination and palladium-catalyzed intramolecular direct arylation reaction was developed to provide a convenient and modular approach for the synthesis of useful azepino-fused isoindolinones. Nineteen azepino-fused isoindolinones were prepared in good to high (22-81%) yields. The developed protocol tolerated various
The <i>N</i>-Aryl Aminocarbonyl <i>ortho</i>-Substituent Effect in Cu-Catalyzed Aryl Amination and Its Application in the Synthesis of 5-Substituted 11-Oxo-dibenzodiazepines
作者:Xiaoqiong Diao、Lanting Xu、Wei Zhu、Yongwen Jiang、Haoyang Wang、Yinlong Guo、Dawei Ma
DOI:10.1021/ol202721h
日期:2011.12.16
Double amination of ortho-substituted aryl bromides proceeded under mild conditions to afford 5-substituted 11-oxo-dibenzodiazepines, which revealed that there is a strong ortho-substituent effect caused by N-aryl aminocarbonyl groups during copper-catalyzed aryl amination.