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.