Are there any databases with rate constants for keto-enol tautomerism in small molecules? I'm looking for rate constants if possible.
This is not a database, and I don't know about how small molecules you are looking for, I found that article on Jacs Kinetics and thermodynamics of keto-enol tautomerism of simple carbonyl compounds: an approach based on a kinetic study of halogenation at low halogen concentrations
If you can access the file it will be better for you, if not I let you some matrix of values. I hope it can help ! I give you them in the same the order of the publication.
I added some other publication at the end.
Kinetic studies of keto-enol and other tautomeric equilibria by flash photolysis (a lot of constants in this one)