1. Synthesis of pyrroles 2. Synthesis of fused pyrroles 3. Synthesis of isoindoles and indoles 4. Synthesis of fused indoles 5. Synthesis of indolizines and azaindoles 6. Synthesis of pyrazoles 7. Synthesis of imidazoles and benzimidazoles 8. Synthesis of triazoles, benzotriazoles, and tetrazoles 9. Synthesis of furans, benzofurans, and dioxolanes 10. Synthesis of isoxazoles, oxazoles, and oxadiazoles 11. Synthesis of thiophenes 12. Synthesis of thiazoles, benzothiazoles, and thiadiazoles