L-shaped Ï-extended penta-, hexa-, and heptacycles with a pyrrolo[1,2-a][1,8]naphthyridine junction were prepared from N,Nâ²-bis[2-(2-alkyn-1-yl)phenyl]carbodiimides or their naphthyl analogs via Rh(I)-catalyzed intramolecular [2+2+2] cycloaddition and dehydrogenative aromatization. These L-shaped compounds emit sky-blue, yellow-green, or golden-orange fluorescence, with high quantum yields.
                                    L型π-扩展的五环、六环和七环与
吡咯并[1,2-a][1,8]
萘啶结合,通过Rh(I)催化的分子内[2+2+2]环加成和去氢芳香化反应,从N,N'-双[2-(2-炔基-1-基)苯基]
氨基
脲或其
萘基类似物制备而成。这些L型化合物发出天蓝色、黄绿色或
金橙色荧光,具有高量子产率。