cyclocondensation reactions, instead of a 1,3-dipolar cycloaddition. The reaction takes place in the presence of sodium acetate as base and employs benign solvents. The optical properties of the resulting pyrido[2,3-b]indolizines were studied, showing green light emission with high fluorescence quantum yields.
吡啶鎓叶立德被公认为环加成反应的偶极子。反过来,N-(
氰基甲基)-2-烷基
吡啶鎓盐与烯胺酮的微波辅助相互作用出人意料地以环异构化和环缩合反应的多米诺序列进行,而不是1,3-偶极环加成。该反应在作为碱的
乙酸钠存在下进行,并使用温和的溶剂。研究了所得
吡啶并[2,3-b]
吲哚嗪的光学性质,显示出具有高荧光量子产率的绿光发射。