Synthesis of Multisubstituted 1,2,3-Triazoles: Regioselective Formation and Reaction Mechanism
作者:Tzu-Ching Chi、Po-Chun Yang、Shao-Kung Hung、Hui-Wen Wu、Hong-Chi Wang、Hsin-Kuan Liu、Li-Wen Liu、Ho-Hsuan Chou
DOI:10.1021/acs.joc.3c02836
日期:2024.4.19
synthetically useful approach to functionalized triazoles is described via the reaction of β-carbonyl phosphonates and azides. 1,4- and 1,5-disubstituted and 1,4,5-trisubstituted triazoles can be regio- and chemoselectively accessed under mild conditions in good to excellent yields (31 examples, up to 99%). A mechanism is proposed that rationalizes the avoidance of the 4-phosphonate byproducts, which
通过β-羰基膦酸酯和叠氮化物的反应描述了一种合成功能化三唑的有用方法。 1,4-和1,5-二取代和1,4,5-三取代三唑可以在温和条件下以区域选择性和化学选择性获得,产率良好至优异(31个例子,高达99%)。提出了一种合理避免 4-膦酸酯副产物的机制,该机制与晶体学和实验证据一致。