Abstract Novel reactions of oxetane with K−/K+ and Na−/K+ complexes in which potassium cation is complexed by 18-crown-6 have been studied. Organometallic alkoxides formed by cleavage of an alkyl—oxygen bond in the oxetane molecule were used for one pot metallation of anisole and triphenylmethane. The reaction with carbon dioxide was also investigated. Reaction mechanisms have been studied by NMR, GLC-MS, IR techniques ...