Abstract
A simple, clean, and highly efficient green protocol has been developed for synthesis of bis(indolyl), di(bis-indolyl), and tris-indolyl methanes by the reaction of indole with aldehydes and ketones irn the presence of oxalic acid dihydrate [(CO2H)2·2H2O] and N-cetyl-N, N, N-trimethylammonium bromide (CTAB) in water. Also, tri(bis-indolyl) and tetra(bis-indolyl)methanes as new bis(indolyl)methanes were prepared under thermal conditions.
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Ghorbani-Vaghei, R., Veisi, H., Keypour, H. et al. A practical and efficient synthesis of bis(indolyl)methanes in water, and synthesis of di-, tri-, and tetra(bis-indolyl)methanes under thermal conditions catalyzed by oxalic acid dihydrate. Mol Divers 14, 87–96 (2010). https://doi.org/10.1007/s11030-009-9150-z
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DOI: https://doi.org/10.1007/s11030-009-9150-z