Synthesis, Table of Contents Synthesis 2023; 55(19): 3179-3185DOI: 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 Authors Lingyu Zhang Songlin Zhang∗ Recommend Article Abstract Buy Article(opens in new window) All articles of this category(opens in new window) 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. Key words Key wordscopper - cross-coupling - ligand-free - Ullmann reaction - 2H-1,4-benzoxazin-3-(4H)-ones Full Text References References 1a Landquist JK. 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Asian J. 2011; 23: 2947 Supplementary Material Supplementary Material Supporting Information (PDF)