New Heterocyclization Reactions with Malononitrile Dimer

New approaches based on multicomponent condensation reactions were proposed to the synthesis of new heterocyclic derivatives of malononitrile dimer of the series of 7-oxa-1,3,6-triazabenzo[ no ]tetraphene, 1,2,3,4-tetrahydropyrazolo[1,5 -a ][1,3,5]triazine, 1,3,5,5-tetracyanocyclohex-3-ene, 3,9-diazaspiro[5.5]undeca-1,4-diene and 1 Н ,5 Н- spiro[3,7-diazabicyclo[3.3.1]non-2-ene-9,4'-piperidine]. Structure of the products was studied using mass spectrometry, IR and NMR spectroscopy, as well as X-ray diffraction analysis.