Synthesis 2022; 54(13): 3105-3113
DOI: 10.1055/a-1775-2910
paper

Selenium Radical-Triggered Spiro-Tricyclization of N-Aryl-N-(2-hydroxyethyl)propiolamides

Feng Pan
a   School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. of China
b   College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, P. R. of China
,
Huilin Xie
c   Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 34100, P. R. of China
,
Wenlin Xie
a   School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. of China
,
Yu-Chao Wang
b   College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, P. R. of China
c   Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 34100, P. R. of China
,
c   Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 34100, P. R. of China
,
b   College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, P. R. of China
› Author Affiliations

Financial supports from the Natural Science Foundation of Zhejiang Province (Nos. LY22B020010) and the Natural Science Foundation of China (Nos. 21772067, 21801096, and 22161043) are gratefully acknowledged.


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Abstract

A blue LED-promoted dearomative oxo-spirocyclization of N-aryl-N-(2-hydroxyethyl)propiolamides is developed. The reaction works well to provide a series of selenium-containing benzo[b]pyrrolo[2,1-c][1,4]oxazine-3,9-diones with high efficiency and good tolerance for functional groups. Besides, diselenium-containing benzo[b]pyrrolo[2,1-c][1,4]oxazine-3,9-diones can also be efficiently synthesized in the presence of Oxone. In this process, it is believed that a selenium radical-triggered ipso-cyclization and oxo-Michael addition are involved. Further applications using the prepared products in bioactivity assay is currently underway.

Supporting Information



Publication History

Received: 26 January 2022

Accepted after revision: 17 February 2022

Accepted Manuscript online:
17 February 2022

Article published online:
02 May 2022

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