Imidazolone
Imidazolones are a family of heterocyclic compounds, the parents of which have the formula OC22. Two isomers are possible, depending on the location of the carbonyl group. The NH groups are nonadjacent. A common route to imidazol-2-ones involves condensation of ureas and acyloins. Some are of interest in the pharmaceuticals. 4-Imidazolones arise from the condensation of amidines with 1,2-dicarbonyls such as glyoxal.
