Dioxalin

Dioxalin is a reaction product of glycerol with oxalic acid at 533 Kelvin. Its IUPAC name is 5-(hydroxymethyl)-1,4-dioxane-2,3-dione. Dioxalin readily looses two molecule of carbon dioxide at this high temperature to form allyl alcohol and therefore offers an important method for conversion of glycelol to allyl alcohol.