| Abstract: | The condensation of propionaldehyde with cyanothioacetamide gives 6-amino-3,5-dicyano-4-ethylpyridine-2(1H)-thione, which was used to obtain substituted 2-alkylthiopyridines, 2-ethylthio-6- ethylaminopyridine, and pyrazolo3,4-b]pyridine.T. G. Shevchenko Lugansk State Pedagogical Institute, 348011 Lugansk. N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Science, 117913 Moscow. Translated from Khimiya Geterotsklicheskikh Soedinenii, No. 8, pp. 1094–1098, August, 1996. Original article submitted March 4, 1996; revision submitted July 1, 1996. |
