tautomerizev.

1905 Proc. Chem. Soc. 21 165 It is also possible that the very energetic ultra-violet light used by Mr. Baly exerts some action on the solutions of substances capable of being tautomerised.

1911 Jrnl. Amer. Chem. Soc. 33 1213 The normal carbinol halides, even in the absence of excess of acid, tautomerize spontaneously to the colored quinoid state.

1957 R. H. Thomson Naturally Occurring Quinones ii. 20 It is not possible, as a rule, to tautomerize a benzoquinol to the diketo form.

1972 R. A. Jackson Mechanism iv. 60 This could plausibly lose carbon dioxide to give the carbanion 82 which would rapidly tautomerize to pyridine 83 by a proton shift.

2006 J. M. Hornback Org. Chem. (Internat. Student ed.) xi. 430 The enol cannot be isolated because it spontaneously tautomerizes to a ketone.