63536-44-7Relevant articles and documents
Electro-reductive C-H cyanoalkylation of quinoxalin-2(1H)-ones
Ding, Ling,Liu, Yuxiu,Niu, Kaikai,Wang, Qingmin
supporting information, (2022/01/24)
Herein, we report a practical electro-reductive protocol for the direct C–H cyanoalkylation of quinoxalin-2(1H)-ones via iminyl radical-mediated ring opening. These mild reactions proceed under metal-, reductant-, and reagent-free conditions to provide synthetically useful cyanoalkylated quinoxalin-2(1H)-ones.
Method for catalytically preparing 3-sulfur substituted quinoxalinone derivative
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Paragraph 0057; 0059, (2021/11/06)
The invention relates to a method for catalytically preparing a 3-sulfur substituted quinoxalinone derivative. The method comprises the following steps of: firstly preparing a 3-(thiophenyl) quinoxaline-2 (1H)-ketone derivative, then adding the 3-(thiophenyl) quinoxaline-2 (1H)-ketone derivative, disulfide, an oxidizing agent and a catalyst into a reaction container, adding a solvent, reacting under the light irradiation of a blue lamp, and after the reaction is completed, filtering, extracting, concentrating, separating and purifying to obtain the 3-sulfur substituted quinoxalinone derivative. According to the invention, the problem that a traditional catalyst needs high-temperature reaction is solved, disulfide is used as a raw material, the problem that foul thiophenol and thiol substances are used as raw materials traditionally is solved, and a green and efficient synthesis method is used to promote industrialization of a reaction system; and meanwhile, quinoxalinone compounds with different substituent groups are also efficiently expanded.
Light-driven selective aerobic oxidation of (iso)quinoliniums and related heterocycles
Zhou, Meimei,Yu, Keyang,Liu, Jianxin,Shi, Weimei,Pan, Yingming,Tang, Haitao,Peng, Xiangjun,Liu, Qian,Wang, Hengshan
, p. 16246 - 16251 (2021/05/19)
Selective C1-H/C4-H carbonylation of N-methylene iminium salts, catalyzed by visible-light photoredox and oxygen in the air, has been reported. A ruthenium complex acts as a chemical switch to conduct two different reaction pathways and to afford two diff