Synthesis 2023; 55(19): 3179-3185
DOI: 10.1055/a-2110-1989
paper

Method for the Synthesis of 2H-1,4-Benzoxazin-3-(4H)-ones via Ligand-Free Copper-Catalyzed Cascade Reaction

Lingyu Zhang
,
Songlin Zhang
The study was supported by the Project of Scientific and Technologic Infrastructure of Suzhou (No. SZS201207) and the National Natural Science Foundation of China (No. 21072143).


Abstract

An efficient method for the synthesis of 2H-1,4-benzoxazin-3-(4H)-ones via ligand-free copper-catalyzed cascade reaction of substituted chloroacetamides with 2-halophenols has been developed for the first time. Some of the issues typically encountered during the synthesis of 2H-1,4-benzoxazin-3-(4H)-ones, including adding noble metals and ligands, poor substrate scope, have been addressed using this newly developed ligand-free copper-catalyzed cascade reaction.

Supporting Information



Publication History

Received: 30 April 2023

Accepted after revision: 14 June 2023

Accepted Manuscript online:
14 June 2023

Article published online:
17 July 2023

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