A molozonide (short for "molecular ozonide"; 1,2,3-trioxolane) is a cyclic molecule containing a five-membered ring consisting of two adjacent carbon atoms and three adjacent oxygen atoms. [1] They are thus cyclic disubstituted trioxidane derivatives. Molozonides are formed by cycloaddition of ozone and an alkene during ozonolysis, as a transient intermediate which quickly rearranges to give the ozonide (1,2,4-trioxolane), the relatively stable product generated immediately prior to reductive or oxidative cleavage to form alcohols, carbonyl compounds, or derivatives thereof. [2]
