One-pot synthesis of 2-(quinoxalin-2-yl)benzoate through NBS-mediated sequential reaction of 2-alkynylbenozate and aryl-1,2-diamine
作者:Bin Huang、Lele Ma、Guanyinsheng Qiu
DOI:10.1016/j.tetlet.2017.04.063
日期:2017.5
A metal-free route involving a sequential reaction of 2-alknylbenzoate and aryl-1,2-diamine is described for the generation of 2-(quinoxalin-2-yl)benzoate. The sequential reaction combines NBS-mediated diketonization of 2-alknylbenzoate and condensation reaction with aryl-1,2-diamine, and proceeds smoothly under mild reaction conditions and an array of 2-(quinoxalin-2-yl)benzoate is achieved with high
描述了涉及2-烷基苯甲酸酯和芳基1,2-二胺的顺序反应的无金属路线,用于生成2-(喹喔啉-2-基)苯甲酸酯。顺序反应结合了NBS介导的2-烯丙基苯甲酸酯的二酮化和与芳基1,2-二胺的缩合反应,并在温和的反应条件下顺利进行,从而高效地获得了一系列2-(喹喔啉-2-基)苯甲酸酯以及出色的功能组耐受性。机理研究表明,观察到了氧转移反应,并且水被掺入到相邻的酯基团中。