Isomerization of 2-aryl-5,6-tetramethylene-3,3,4-tricyano-1,3,4,5-tetrahydropyridine-4- carboxamides under the influence of acids

Article abstract of DOI:10.1007/BF02321392

When 2-aryl-5,6-tetramethylene-3,3,4-tricyano-2,3,4,5-tetrahydropyridine-4- carboxamides are subjected to the action of acids, they are isomerized, forming either 2-aryl-5,6-tetramethylene-3,3,4-tricyano-1,2,3,4-tetrahydropyridine-4- carboxamides or 3-ary