Synlett, Table of Contents Synlett 2022; 33(10): 998-1002DOI: 10.1055/a-1815-3539 letter Copper-Catalyzed Alkylation of Quinoxalin-2(1H)-ones with Styrenes and tert-Butyl Peroxybenzoate Xiaoyang Zhong‡ , Xinying Li‡ , Hua Yao∗ , Zhaohua Yan , Hui Guo , Li Min , Sen Lin∗ Recommend Article Abstract Buy Article All articles of this category Abstract A simple strategy for the synthesis of 3-substituted quinoxalin-2(1H)-ones containing ether units is proposed. The method is realized by the three-component synthesis of quinoxalin-2(1H)-ones, styrenes, and tert-butyl peroxybenzoate (TBPB). This reaction has good functional group tolerance and may involve a free-radical process. Key words Key wordsquinoxalin-2(1H)-ones - three-component synthesis - styrenes - free radicals Full Text References References and Note 1a Ries UJ, Priepke HW. M, Hauel NH, Handschuh S, Mihm G, Stassen JM, Wienen H, Nar W. Bioorg. Med. Chem. Lett. 2003; 13: 2297 1b Carta A, Piras S, Loriga G, Paglietti G. Mini-Rev. 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