Interaction of 2-aryl-6-hydroxy-5,6-tetra-methyl-enepiperidine-3,3,4,4-tetracarbonitriles and 2-aryl-5,6-tetramethylene-3,3,4-tricyano-2,3,4,5-tetrahydropyridine-4-carboxamides with ammonia
The interaction of 2-aryl-6-hydroxy-5,6-tetramethylenepiperidine-3,3,4,4-tetracarbonitriles and 2-aryl-5,6-tetramethylene-3,3,4-tricyano-2,3,4,5-tetrahydropyridine-4-carboxamides with ammonia results in the formation of 5-aryl-1,7-tetramethylene-3-imino-4,8-dicyano-2,6-diazabicyclo[2.2.2]octane-8-carboxamides. In solvents, these latter compounds are converted to 3-amino-6-oxo-1,8-tetramethylene-2,7-diazabicyclo-[3.2.1]octa-3-ene-4,5-dicarbonitrile and 2-amino-3-cyano-5,6-tetramethylenepyridine-4-carboxamide.