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10Trifluoromethyl-substituted 1,6-naphthyridines and pyrido[4,3-d]pyrimidines, Russian Chemical Bulletin Reactions of ethyl 4-amino-6-(ethoxycarbonylmethyl)-2-phenylpyrimidine-5-carboxylate with hydrazines, Russian Chemical Bulletin Synthesis of 4-(trifluoromethyl)pyrido[4,3-d]pyrimidine derivatives, Russian Chemical Bulletin Pyrano[4,3-d]pyrimidinium salts 4. Transformations of 5,7-diaryl-1,3-dimethyl-2,4-dioxo-1H,3H-pyrano[4,3-d]pyrimidinium bromides under the action of phenylhydrazines and aromatic acid hydrazides, Russian Chemical Bulletin A new synthesis of pyrido[4,3-d]pyrimidin-2-ones, Chemistry of Heterocyclic Compounds Electrophoretic determination of phenyl and p-bromophenyl substituted 1H,2H,3H,4H-pyrido[4,3-d]pyrimidinium diiodobromides, Journal of Analytical Chemistry Ishikawa, T., Science of Synthesis, (2004) 16, 1367..
Pyrimidopyrimidines, Science of Synthesis