1. Synthesis of pyridines2. Synthesis of fused pyridines and piperidines3. Synthesis of quinolines4. Synthesis of isoquinolines5. Synthesis of pyrimidines6. Synthesis of pyridazines, pyrazines, quinazolines, quinoxalines, triazines, and tetrazines7. Synthesis of pyrans and benzopyrans8. Synthesis of fused benzopyrans9. Synthesis of oxazines, benzoxazines, thiopyrans, and thiazines10. Synthesis of azepines, diazepines, triazepines, oxepines, oxazepines, and thiapines