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Silver-Catalyzed Radical Tandem Cyclization: An Approach to Direct Synthesis of 3‑Acyl-4-arylquinolin-2(1H)‑ones

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posted on 05.09.2014, 00:00 by Wen-Peng Mai, Gang-Chun Sun, Ji-Tao Wang, Ge Song, Pu Mao, Liang-Ru Yang, Jin-Wei Yuan, Yong-Mei Xiao, Ling-Bo Qu
A silver-catalyzed efficient and practical synthesis of 3-acyl-4-arylquinolin-2­(1H)-ones or 3-acyl-4-aryldihydroquinolin-2­(1H)-ones through intermolecular radical addition/cyclization in aqueous solution is reported. This method provides a novel, highly efficient, and straightforward route to substituted quinolin-2-ones or 3,4-dihydroquinolin-2-ones in one step. A possible mechanism for the formation of quinolin-2-ones is proposed.

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