What is "malonic anhydride"

n. (context organic compound English) The acid anhydride of malonic acid

Malonic anhydride or oxetane-2,4-dione is an organic compound with chemical formula CHO or CH(CO)O. 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. .