Aliphatic aldehydes in the synthesis of condensed 4-alkyl(cycloalkyl)-2-amino-3-cyano-4H-pyrans

Substituted 4-alkyl(cycloalkyl)-2-amino-3-cyano-4H-pyrans have been obtained from the reaction of aliphatic aldehydes with malononitrile and some other CH acids in the presence of N-methylmorpholine. T. G. Shevchenko Lugansk State Pedagogical University, Lugansk 348011, Ukraine. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 117813, Russia; Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, 1363–1366, October, 1999.