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Paper | Special issue | Vol 101, No. 1, 2020, pp.235-250
Published online, 7th August, 2019
DOI: 10.3987/COM-19-S(F)19
A Mild Bischler–Napieralski-Type Cyclization of Trichloromethyl Carbamates for the Synthesis of β-Carbolinones

Seiya Hirao, Mayumi Kitamori, Tomoki Itoh, Yuusuke Chiba, and Takumi Abe*

*Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan


A straightforward synthesis of β-carbolinones by the Bischler–Napieralski-type cyclization of the corresponding trichloromethyl carbamates, which does not require acids, bases, oxidants, or transition-metals to promote the cyclization, has been achieved.