Formation and reactions of mesoionic anhydro-4-hydroxy-1,3-dioxolium hydroxides
Abstract
A novel mesoionic system, anhydro-4-hydroxy-1,3-dioxolium hydroxide, was formed by intramolecular carbene-carbonyl reaction on catalytic decomposition of α-diazoacetic benzoic anhydrides and trapped with acetylenic compounds to give furan derivatives as final products.