SEARCH Articles Figures Tables Aromatic compounds ring opening Heterocyclic compounds four-membered ring opening Heterocyclic compounds ring opening Heterocyclic compounds seven-membered ring opening Heterocyclic compounds three-membered ring opening Open-chain Compounds versus Ring Systems Organometallic compounds ring-opening polymerization Ring-opening polymerization cyclic compounds Ring-opening to Acyclic Compounds Spiro compounds ring opening Spiro compounds via cyclopropane ring opening