Oxoarylation of ynamides with N-aryl hydroxamic acids  

作　　者：Changwei Chen Hongyu Zhang Gang Xu Sunliang Cui 

机构地区：[1]College of Pharmaceutical Sciences,Zhejiang University,Hangzhou 310027,China [2]College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,China

出　　处：《Chinese Chemical Letters》2021年第8期2551-2554,共4页中国化学快报（英文版）

基　　金：financial support by the National Natural Science Foundation of China (Nos.21878264,21971222)。

摘　　要：Ynamides are electron-rich alkynes with unique reactivities and act as flexible building blocks in organic synthesis.Therefore,the investigation for transformation of ynamides with exceptional selectivity and efficiency is attractive and interesting.Herein,we report an oxoarylation of ynamides with N-aryl hydroxamic acids.In the presence of catalytic Cu(OTf)_(2),both the terminal and internal ynamides could undergo an addition/[3,3] sigmatropic rearrangement cascade with N-aryl hydroxamic acids to achieve oxoarylation,along with providing selective entry to(ortho-amino)arylacetamides and oxindoles.Moreover,deuterium-labelling reaction and gram-scale reaction were conducted to probe the mechanism and showcase the scalability.

关 键 词：Ynamide Hydroxamic acid Oxoarylation OXINDOLE REARRANGEMENT 

分 类 号：O621.25[理学—有机化学]