Abstract
The peculiarities of the Fischer cyclization of the 4-pyridylhydrazones of propionaldehyde and methyl ethyl ketone, the formation of 3-methyl- and 2,3-dimethyl-5-azaindoles, 4aminopyridine, 4-ethylaminopyridine, and 1-(4′-pyridyl)-3,5-diethyl-5-methylpyrazoline under these reaction conditions, and the effect of various catalysts on the direction of the process and the yields of products were examined.
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See [1] for communication XXXIX.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 652–655, May, 1972.
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Marshalkin, M.F., Yakhontov, L.N. Azaindole derivatives. Chem Heterocycl Compd 8, 590–593 (1972). https://doi.org/10.1007/BF00488152
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DOI: https://doi.org/10.1007/BF00488152