Imidazolinones or imidazolones are a family of heterocyclic compounds, the parents of which have the formula OC(NH)2(CH)2. Two isomers are possible, depending on the location of the carbonyl (CO) 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.
References
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- Antonova, Maria M.; Baranov, Vladimir V.; Kravchenko, Angelina N. (2015). "Methods for the synthesis of 1-substituted 1H-imidazol-2(3H)-ones". Chemistry of Heterocyclic Compounds. 51: 395–420. doi:10.1007/s10593-015-1716-3.