ORGANIC CHEMISTRY Chapter 14 o a ring that contains at least one heteroatom(an atom other than carbon) is called a heterocycle and a substance based on a heterocyclic ring is a heterocyclic compound o Heterocyclic compounds containing n. o or s are by far the most common H Pyridine Pyrrole F uran Thiophene 吡啶 吡咯 呋喃 噻吩 Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 14 A ring that contains at least one heteroatom (an atom other than carbon) is called a heterocycle, and a substance based on a heterocyclic ring is a heterocyclic compound. Heterocyclic compounds containing N, O or S are by far the most common. N NH O S Pyridine Pyrrole Furan Thiophene 吡啶 吡咯 呋喃 噻吩