Enol‐keto tautomerism of alkyl 2‐picolyl ketones

Abstract
An analysis of the ir and nmr spectra taken on a series of nine different alkyl 2‐picolyl ketones clearly indicates that there is an enol‐keto tautomerism. The enol:keto ratio exhibits a marked dependence on both solvent polarity and the nature of the alkyl group. The equilibrium values correlate with the Taft sleric substituent constants.