I came across this question in a test:
The enol form is the ________ form for 3-hydroxy pent-2-enoate? (major/minor)
My argument is that the enol form must be more stable because of hydrogen bonding in the enol form and subsequent six membered ring formation (chelation). However the keto form has no such stabilization factor. Hence according to me the enol form must be more stable. But sadly, that is the wrong answer. What's going wrong?
Structure for reference: