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Issue 55, 2013
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Intramolecular [2+2+2] cycloaddition of bis(propargylphenyl)carbodiimides: synthesis of L-shaped π-extended compounds with pyrrolo[1,2-a][1,8]naphthyridine corner units

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Abstract

L-shaped π-extended penta-, hexa-, and heptacycles with a pyrrolo[1,2-a][1,8]naphthyridine junction were prepared from N,N′-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.

Graphical abstract: Intramolecular [2+2+2] cycloaddition of bis(propargylphenyl)carbodiimides: synthesis of L-shaped π-extended compounds with pyrrolo[1,2-a][1,8]naphthyridine corner units

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Publication details

The article was received on 16 Apr 2013, accepted on 22 May 2013 and first published on 23 May 2013


Article type: Communication
DOI: 10.1039/C3CC42792G
Citation: Chem. Commun., 2013,49, 6206-6208
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    Intramolecular [2+2+2] cycloaddition of bis(propargylphenyl)carbodiimides: synthesis of L-shaped π-extended compounds with pyrrolo[1,2-a][1,8]naphthyridine corner units

    T. Otani, T. Saito, R. Sakamoto, H. Osada, A. Hirahara, N. Furukawa, N. Kutsumura, T. Matsuo and K. Tamao, Chem. Commun., 2013, 49, 6206
    DOI: 10.1039/C3CC42792G

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