作者:Anthony J. Lawrence、Michael G. Hutchings、Alan R. Kennedy、Joseph J. W. McDouall
DOI:10.1021/jo9022155
日期:2010.2.5
The first example of a stable phenylogous enol, resulting from an extended keto−enol tautomerization across a benzene ring, is described. The enol has been isolated, and its structure was proven by X-ray crystallography. The equilibrium between the keto- and enol-tautomers has been extensively studied and quantified in solution by NMR and UV−vis spectroscopy. The position of equilibrium showed a linear