SEARCH Articles Figures Tables 3- Membered rings three heteroatoms 4- Membered rings with three heteroatoms APPLICATIONS OF THREE-MEMBERED RINGS WITH TWO HETEROATOMS Compounds with Heteroatom Five-membered Ring Ligands Eight-membered Rings containing One Heteroatom Eight-membered Rings containing Three or More Heteroatoms Eight-membered Rings containing Two Heteroatoms Five-Membered Ring Systems with Two or More Heteroatoms Five-Membered Rings One Heteroatom Five-Membered Rings with More Than Two Heteroatoms Five-Membered Rings with Two Heteroatoms Five-membered ring systems heteroatoms Five-membered rings heteroatoms Heteroatomic Rings Heteroatoms, three-membered ring opening with More Than One Heteroatom in the Five-Membered Ring Nuclear magnetic resonance 5- membered rings, one heteroatom Of heterocycles: five-membered rings with one heteroatom Of heterocycles: five-membered rings with two or more heteroatoms REACTIVITY OF THREE-MEMBERED RINGS WITH TWO HETEROATOMS Reactions with Five-Membered Ring Systems Containing One Heteroatom Reactivity of Five-membered Rings with One Heteroatom Reactivity of Five-membered Rings with Two or More Heteroatoms STRUCTURE OF THREE-MEMBERED RINGS WITH TWO HETEROATOMS SYNTHESIS OF THREE-MEMBERED RINGS WITH TWO HETEROATOMS Saturated Six-Membered Rings with Two Heteroatoms Seven-membered Rings containing Three or More Heteroatoms Seven-membered rings three heteroatoms Six-Membered Rings with Three Heteroatoms Six-Membered Rings with Two Heteroatoms Structure of Five-membered Rings with One Heteroatom Structure of Five-membered Rings with Two or More Heteroatoms Sulfur compounds heteroatoms, five-membered rings Synthesis of Five-Membered Rings with Two Heteroatoms Three-Membered Rings with One Heteroatom Three-membered rings with two heteroatoms