In-Water Synthesis of 5-Thiolated 1,2,3-Triazoles from β-Thioenaminones by Diazo Transfer Reaction
作者:Leiling Deng、Xiaoji Cao、Yunyun Liu、Jie-Ping Wan
DOI:10.1021/acs.joc.9b01817
日期:2019.11.1
with the metal-free annulation reactions of readily available β-thiolated enaminones and tosyl hydrazine. By these reactions with water as the only medium, a broad array of 5-thiolated 1,2,3-triazoles have been synthesized with generally good to excellent yields. Except using TMEDA (N,N,N',N'-tetramethylethylenediamine) as the only base promoter, not any other catalyst or additive is required, thus
具有硫基侧链的1,2,3-三唑的合成已经通过易于获得的β-硫醇化的烯胺酮和甲苯磺酰肼的无金属环化反应进行了研究。通过以水为唯一介质的这些反应,已经合成了范围广泛的5-硫醇化的1,2,3-三唑,其收率通常良好至极佳。除了使用TMEDA(N,N,N',N'-四甲基乙二胺)作为唯一的碱促进剂外,不需要任何其他催化剂或添加剂,从而为有效的1,2,3-三唑合成提供了一种高效且环境友好的方法。