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Communication | Regular issue | Vol 12, No. 4, 1979, pp.471-474
Published online, 1st January, 1970
DOI: 10.3987/R-1979-04-0471
A Novel Indole Trimer; Diindolo[2,3-a:2’,3’-c]carbazole

Takao Kaneko, Mitsuyoshi Matsuo,* and Yoichi Iitaka

*Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-, Japan


The reaction of indole with a mixture of TiCl3 and H2O2 gives a novel indole trimer, diindolo[2,3-a: 2’,3’-c]carbazole (3), whose structure has been determined spectrometrically and confirmed from the structure determination of its acetyl derivative (4a) by X-ray crystallography.