Reaction of Dihydroazinylidene Cyanoacetic Esters with Nitric Acid: A New Method for the Synthesis of Dihydroazinylidene Nitroacetonitriles

An approach to the synthesis of previously unknown dihydroazinylidene nitroacetonitriles (derivatives of pyridine, pyrimidine, pyrazine and pyridazine) has been developed involving nitration of the corresponding dihydroazinylidene cyanoacetic esters at the side chain α-C-atom and dealkoxycarbonylation of the resulting products.