Tetrahedron
Tetrahedron
5 years ago

Palladium-catalyzed synthesis and fluorescence study of 2,3-diaryl-5-ethynylbenzo[e]indoles

Palladium-catalyzed synthesis and fluorescence study of 2,3-diaryl-5-ethynylbenzo[e]indoles
A series of new ethynylated benzoindoles were synthesized starting with the nucleophilic attack of naphthoquinone by lithium acetylides. The resulting 1,4-diethynylnaphthalenes were applied in palladium catalyzed CN coupling - hydroamination domino reactions. The obtained compounds fluoresce in the near ultraviolet and blue spectral region with high quantum yields (65–78%).

Publisher URL: www.sciencedirect.com/science

DOI: S0040402017303848

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