Selective C−N Bond Cleavage of
<i>N</i>
‐Acylisatins: Towards High Performance Acylation/Arylation/Transamination Reagents
作者:Li Xiong、Rong Deng、Tingting Liu、Zhongfeng Luo、Zijia Wang、Xiao‐Feng Zhu、Hui Wang、Zhuo Zeng
DOI:10.1002/adsc.201900819
日期:2019.12.3
New multipurpose arylation/acylation/transamination reagents, N‐acylisatins, have been developed by selective ‘inside‐outside’ C−N bond cleavage under different catalytic conditions. As activated amides, N‐acylisatins undergo Rh‐catalyzed C−H arylation and Pd‐catalyzed acylation by cleavage outside the C−N bond, and the desired biaryls and diaryl ketones were obtained in good to excellent yields. Generally
通过在不同催化条件下选择性“内-外” C-N键裂解,已开发出新的多功能芳基化/酰化/氨基转移试剂N-酰基赖氨酸。作为活化的酰胺,N-酰基赖氨酸通过在C-N键之外的裂解而经历Rh催化的CH芳基化和Pd催化的酰化,并以良好或优异的收率获得了所需的联芳基和二芳基酮。通常,N-酰基赖氨酰胺与胺类的结合可通过内部C-N键断裂以可预测的方式导致开环反应和氨基转移产物的形成。有趣的是,氮的治疗当添加CsF时,含酰基丙烯酸的类胺会导致意想不到的外环转氨产物,这表明CsF可以促进外部C-N键的裂解路径。值得注意的是,这项工作提出了一种新的策略,可以对一种酰胺进行多种化学转化,以通过选择性的C-N键裂解获得多种产物。