Synthesis of 5-alkynyl-2,2,6-trimethyl-1,3-dioxin-4-ones and 1,4-disubstituted-1,2,3-triazoles
作者:Hélio A. Stefani、Adriano S. Vieira、Mônica F.Z.J. Amaral、Leora Cooper
DOI:10.1016/j.tetlet.2011.04.072
日期:2011.8
5-alkynyl-1,3-dioxin-4-ones using Suzuki–Miyaura cross-coupling reaction of potassium alkynyltrifluoroborate salts with 2,2,6-trimethyl-5-iodo-1,3-dioxin-4-one. The resulting 5-ethynyltrimethylsilyl-1,3-dioxin-4-ones obtained through the Sonogashira reaction were further reacted in a Cu(I)-catalyzed Huisgen azide–alkyne 1,3-dipolar cycloaddition to form functionalized 1,4-disubstituted-1,2,3-triazoles in
本文中,我们报告了炔基三氟硼酸钾盐与2,2,6-三甲基-5-碘-1,3的Suzuki-Miyaura交叉偶联反应形成5-炔基-1,3-二恶英-4-酮的方法。 -二恶英-4-一个。通过Sonogashira反应获得的5-乙炔基三甲基甲硅烷基-1,3-二恶英-4-酮进一步在Cu(I)催化的Huisgen叠氮化物-炔烃1,3-偶极环加成反应中反应形成官能化的1,4-二取代-使用温和的条件和超声辐射可加快反应速度,得到1,2,3-三唑的收率很高。