Malonic anhydride

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

Skeletal formula
Ball-and-stick model
Names
Preferred IUPAC name Oxetane-2,4-dione
Other names Malonic anhydride
Identifiers
CAS Number	15159-48-5 Y
3D model (JSmol)	Interactive image
ChemSpider	8351595 Y
PubChem CID	10176090
UNII	V8PB6RYA8G Y
CompTox Dashboard (EPA)	DTXSID00436365
InChI InChI=1S/C3H2O3/c4-2-1-3(5)6-2/h1H2 Y Key: KKHUSADXXDNRPW-UHFFFAOYSA-N Y InChI=1/C3H2O3/c4-2-1-3(5)6-2/h1H2 Key: KKHUSADXXDNRPW-UHFFFAOYAB
SMILES O=C1OC(=O)C1
Properties
Chemical formula	C3H2O3
Molar mass	86.046 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Malonic anhydride was first synthesized in 1988 by ozonolysis of diketene.^[1][2] Some derivatives, such as 3,3-dimethyl-oxetane-2,4-dione, are known.^[3][4][5]

See also

• Carbon suboxide (C₃O₂), an anhydride of malonic anhydride.
• 2-oxetanone, also called β-propiolactone
• 3-oxetanone