SEARCH Articles Figures Tables Esters nitration From heterocycles From oxygenates Heterocycle oxygen Heterocycles nitration Heterocycles oxygenation Heterocycles ring opening Heterocyclic oxygen Nitrate esters Nitrate esters heterocycles Nitration of heterocycles OXYGEN nitrate Of heterocyclic rings Opening of the Ring Oxygen ring Oxygen ring opening Ring opening of oxygen heterocycles Ring oxygenation Ring strain Ring-opening nitration Strained oxygen heterocycles, ring-opening Strained rings The Esters