7-(4-cyanophenyl)-5-methyl-4,7-dihydro[1,2,4]triazolo[1,5a]pyrimidine-2,6-dicarboxylic acid 6-ethyl ester
7-(4-cyanophenyl)-5-methyl-4-(3-trifluromethylphenyl)-4,7-dihydro[1,2,4]triazolo[1,5a]pyrimidine-2,6-dicarboxylic acid 6-ethyl ester
N,N-dimethylethylenediamine
ethyl acetoacetate
4-cyanobenzaldehyde