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Synthetic route towards symmetrically cyclopentannulated carbazole 9 from di(1‐naphthyl)amine. For model compounds 10 and 11 the yields of the final synthetic steps are shown. NBS=N‐bromosuccinimide, DBU=1,8‐diazabicyclo[5.4.0]undec‐7‐ene, DMA=N,N‐dimethylacetamide.
