A Synthesis and Transformations of Alkyl 2-[2-Cyano-2-(2-pyridinyl)ethenyl]amino-3-dimethylaminopropenoates. A One-Pot Synthesis of Pyrrolo[3,2-d]pyrimidin-4-ones
Reactions of Alkyl (Z)-2-[(E)-2-Cyano-2-(2-pyridinyl)ethenyl]amino-3-dimethylaminopropenoates with C- and N-Nucleophiles. The Synthesis of Fused 2H,5H-Pyran-2,5-diones, 4H-Pyrimidin-4-ones, and 1-Heteroaryl-1H-imidazole-4-carboxylates