Direct synthesis of benzoxazinones via Cp*Co(Ⅲ)-catalyzed C-H activation and annulation of sulfoxonium ylides with dioxazolones  

作　　者：Yongqi Yu Zhen Xia Qianlong Wu Da Liu Lin Yu Yuanjiu Xiao Ze Tan Wei Deng Gangguo Zhu 

机构地区：[1]State Key Laboratory of Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China [2]Department of Chemistry,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Chinese Chemical Letters》2021年第3期1263-1266,共4页中国化学快报（英文版）

基　　金：financial support from the Hunan Provincial Innovation Foundation for Postgraduate(No.CX20190267);Natural Science Foundation of Hunan Province(No.2020JJ4171)。

摘　　要：A highly novel and direct synthesis of benzoxazinones was developed via Cp*Co(Ⅲ)-catalyzed C-H activation and[3+3]annulation between sulfoxonium ylides and dioxazolones.The reaction is conducted under base-free conditions and tolerates various functional groups.Starting from diverse readily available sulfoxonium ylides and dioxazolones,a variety of benzoxazinones could be synthesized in one step in 32%-75%yields.

关 键 词：C-H activation Cobalt catalysis ANNULATIONS Sulfoxonium ylides Synthetic methods 

分 类 号：O626[理学—有机化学]