Definitive evidence for the existence of the hydrogen-bonding enol form of non-aromatic β-thioxoketones. X-Ray crystal structure of 1-(1-methylcyclopropyl)-3-thioxobutan-1-one
Abstract
1-(1-Methylcyclopropyl)-3-thioxobutan-1-one, a simple non-aromatic β-thioxoketone, has been found by X-ray diffractometry to exist exclusively in the hydrogen-chelating (Z)-enol form in the crystalline state.