SEARCH Articles Figures Tables 5- Nitropyrimidine, ring transformation reaction with active methylene groups Activated aromatic rings Activation energy ring closure Activation energy ring-opening polymerization Activation of ring Activation or Deactivation by Substituents on a Benzene Ring Anionic ring opening polymerization activators Azines—continued activation by additional ring-nitrogen Azines—continued activation by ring-nitrogen vs. nitro Azines—continued inductive activation by ring-nitrogen Azines—continued resonance activation by ring-nitrogens Aziridine-ring cleavage activation Cyclodehydration ring activity Cyclopropanes, activated: ring opening Cyclopropanes, activated: ring opening synthesis Oxiranic ring activation Polymerization, activation ring-opening Reactivity of benzene rings activating and deactivating substituents Ring activators Ring activity, stereochemical Ring closure activation parameters Ring photochemical activation Ring substitution, catalytic activity Ring thermal activation Ring-activating substituents Ring-closing reactions, activation energy Ring-opening polymerisation monomer activation Ring-opening polymerization activated monomer Structure-activity relationships ring transformations The Relationship Between Activation or Reaction Volume and Ring Size Why Substituents Activate or Deactivate a Benzene Ring