Abstract

Some attempts have been carried out to synthesize polycyclic heterocyclic compounds derived from new benzocarbazoles (1) . New 6-(3-indolyl)benzo[ b ]-carbazoles ( 2a ) have been synthesised in good yields from the reaction of simple indoles and o -phthaldialdehid in methanol catalysed by p -toulenesulfonic acid monohydrate. Their precise structure were established by microanalysis, spectroscopy, and X-ray crystallography of the benzo[ b ]carbazole (2a) . Keywords: indoles, polycyclic heterocyclic compounds, benzo[ b ]carbazoles

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