Synthesis of [1,2,3]Triazolo-[1,5‑a]quinoxalin-4(5H)‑ones through Photoredox-Catalyzed [3 + 2] Cyclization Reactions with Hypervalent Iodine(III) Reagents
journal contributionposted on 02.03.2022, 13:34 by Jinxia Wen, Wenyan Zhao, Xu Gao, Xiaofang Ren, Chunping Dong, Cheli Wang, Li Liu, Jian Li
An efficient synthesis of a variety of [1,2,3]triazolo-[1,5-a]quinoxalin-4(5H)-ones via a [3 + 2] cyclization reaction by photoredox catalysis between quinoxalinones and hypervalent iodine(III) reagents is reported. A range of quinoxalinones and hypervalent iodine(III) reagents were tolerated well. This cyclization reaction allows access to structurally diverse [1,2,3]triazolo-[1,5-a]quinoxalin-4(5H)-ones in moderate to good yields.