Synthesis of pyridine derivatives by reactions of ?,?-unsaturated nitriles with 2-oxo-cycloalkano carbothioic acid anilides
作者:K. Bogdanowicz-Szwed、M. Krasodomska、M. Lipowska、B. Rys、A. Skonecka
DOI:10.1007/bf00817308
日期:——
The tandem Michael addition-cyclization of 2-oxo-cycloalkane carbothioic acid anilides 1-3 to benzylidenemalononitrile 4 yielded spiroannulated pyridines 5-7. Reaction of acrylonitrile with 2 and 3 gave 2,2-disubstituted Michael adducts 14, 15, whereas with 1 led to 2,2,5-tri(2-cyanoethyl)-cyclopentanone 11.