Abstract
The reaction of histamine and histidine with various hetarylaldehydes under the conditions of the base-catalyzed Pictet-Spengler process affords 4-hetaryl-substituted derivatives of spinaceamine and spinacine. The dehydrogenation of the 4-hetaryl-substituted spinaceamine derivatives using elemental sulfur in DMF at 120–130°C led to the formation of 4-hetaryl derivatives of imidazo[4,5-c]-pyridine. Under similar conditions the 4-hetaryl-substituted spinacine derivatives suffered both the dehydrogenation and oxidative decarboxylation resulting in the products identical to the compounds obtained by the dehydrogenation of 4-hetaryl-substituted spinaceamine.
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Original Russian Text © N.N. Smolyar, M.G. Abramyants, T.I. Zavyazkina, D.I. Matveeva, Ya.S. Borodkin, I.A. Voloskii, 2009, published in Zhurnal Organicheskoi Khimii, 2009, Vol. 45, No. 8, pp. 1228–1231.
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Smolyar, N.N., Abramyants, M.G., Zavyazkina, T.I. et al. Synthesis and dehydrogenation of spinaceamine and spinacine 4-hetaryl derivatives. Russ J Org Chem 45, 1219–1223 (2009). https://doi.org/10.1134/S1070428009080181
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DOI: https://doi.org/10.1134/S1070428009080181