SEARCH Articles Figures Tables 2-Substituted oxetane-3-ones 4- oxetan-2-ones, synthesis A Failed Approach to the Oxetan-3-one System Four-membered rings 2-substituted oxetane-3-ones Oxetan-2-one Oxetan-3-ones, photochemistry Oxetan-3-ones, preparation Oxetane Oxetanes Oxetans