Synthesis of A Pentaarylcarbazole: Installation of Different Aryl Groups on Benzenoid Moiety

Tanaka, S.; Asako, T.; Ota, E.; Yamaguchi, J.
Chem Lett. 2020, Advanced Publication
DOI 10.1246/cl.200302

We report here a novel strategy for the synthesis of pentaarylcarbazole. In this method, an N-alkynylation of sulfonamide facilitated by an iodonium salt, and spontaneous cycloaddition of the resulting ynamide were crucial for the rapid construction of the central carbazole core.