1,8-二氮杂双环[5.4.0]十一碳-7-烯促进的邻炔基醌甲基化物(由模块化炔丙胺原位生成)级联双环化,用于构建2-芳基-4-羟基苯并[ c ]苯并苯并吡喃开发了-6-ones。这种合成策略提供了显着的操作简单性,因为它允许使用台式级溶剂,无需预干燥措施和惰性气氛保护。此外,它还表现出良好的官能团兼容性。还检查了这些化合物的光物理性质,显示出具有高量子产率的明亮荧光。
An advanced and novel one-pot synthetic method for diverse benzo[c]chromen-6-ones by transition-metal free mild base-promoted domino reactions of substituted 2-hydroxychalcones with β-ketoesters and its application to polysubstituted terphenyls
作者:Tej Narayan Poudel、Yong Rok Lee
DOI:10.1039/c3ob41800f
日期:——
one-pot syntheses of a variety of benzo[c]chromen-6-one derivatives were accomplished using Cs2CO3-promoted reactions between substituted 2-hydroxychalcones and β-ketoesters. These reactions involved domino Michael addition/intramolecular aldol/oxidative aromatization/lactonization and provided a rapid synthetic route for the production of biologically interesting novel benzo[c]chromen-6-one molecules bearing
利用取代的2-羟基查耳酮和β-酮酸酯之间的Cs 2 CO 3促进反应,可以完成新颖且有效的一锅合成各种苯并[ c ] chromen-6-一衍生物的反应。这些反应涉及多米诺骨牌迈克尔加成/分子内羟醛/氧化芳构化/内酯化,并提供了快速的合成路线,用于生产生物学上令人关注的新型苯并[ c ] chromen-6-分子,该分子在苯环上带有多个不同的取代基。作为该方法的一种应用,几种合成的苯并[ c ] chromen-6-ones被转化为高度官能化的新型三联苯。