Meldrum's acid
IUPAC name 2,2-Dimethyl-1,3-dioxane-4,6-dione Identifiers CAS number 2033-24-1 PubChem 16249 Properties Molecular formula C 6 H 8 O 4 Molar mass 144.13 g mol −1 Melting point 94-95 °C (decomposes) Acidity (p K a ) 4.97 Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Meldrum's acid or 2,2-dimethyl-1,3-dioxane-4,6-dione is an organic compound . The compound was first made in 1908 by Andrew Norman Meldrum by a condensation reaction of malonic acid with acetone in acetic anhydride and sulfuric acid . Meldrum misidentified the structure as a β- lactone of β-hydroxyisopropylmalonic acid. The correct structure is shown on this page. The synthesis of Meldrum's acid.