Question

Explain and describe (i) keto-enol tautomerism, and (ii) boat form/chair form of
cyclohexane.

Answer 1

Ans:- (i) Keto-end tautomerism: -

Keto end tautomerism is a chemical equilibrium between keto form and enol form.

- the keto and enol forms are tautomers of each other

- the interconversion of these two forms involves movement of an alpha hydrogen atom and reorganisation of bonding and electrons.

Example:- compound containing carbonyl group is in equilibrium with its enol tautomers

(ii) Boat form/chair form of cyclohexane:

Boat form of cyclohexane has high energy confirmation than chair form, therefore less