Malonic anhydride or oxetane-2,4-dione is an organic compound with chemical formula C3H2O3 or CH2(CO)2O. It can be viewed as the anhydride of malonic acid, or a double ketone of oxetane.
Malonic anhydride was first synthesized in 1988 by ozonolysis of diketene.Cotton, F. A.; Wilkinson, G. (1988) Advanced Inorganic Chemistry, 5th edn. Wiley Some derivatives, such as 3,3-dimethyl-oxetane-2,4-dione, are known.Charles L. Perrin; Arrhenius, T (1978). J. Am. Chem. SOC. volume 100, pages 5249-5251.Ribeiro da Silva, M. A. J.; Monte, M. J. S.; Ribeiro, J. R.(1999) J. Chem.Thermodyn. 31, 1093.Charles L. Perrin, Douglas Magde, Sylvia J. Berens, Julie Roque (1980), Raman spectrum of a malonic anhydride. (Actually, of 3,3-dimethyl-oxetane-2,4-dione.) J. Org. Chem., volume 45 issue 9, pp 1705–1706. .
See also Carbon suboxide (C3O2), an anhydride of malonic anhydride. 2-oxetanone, also called β-propiolactone 3-oxetanone
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