Courses
Courses for Kids
Free study material
Free LIVE classes
More

# Which among the following show tautomerism?(A)Alcohols(B)Phenols(C)Ethers(D)Anisole

Last updated date: 19th Mar 2023
Total views: 205.5k
Views today: 4.84k
Tautomers are the isomers of a molecule that exist in a solution. They are interchangeable forms as the chemical bonds are rearranged many times. This is different from chirality. To exhibit tautomerism, the carbonyl group should have an alpha hydrogen which is attached to the $s{p^3}$ hybridized carbon atom. There is an exchange of a hydrogen atom between two other atoms while forming a covalent bond to either one in tautomerism. It is a reversible process. To exhibit tautomerism, either acid or base can catalyse the proton transfer. In the first step of acid-catalyzed tautomerization of keto form, hydronium ion protonated carbonyl oxygen atom and then, water removes alpha-hydrogen atom to give the enol. Tautomerism is a type of functional isomerism in which both isomers are in dynamic equilibrium with each other. In phenol, the alpha carbon atom contains hydrogen attached to it. So, it exhibits keto-enol tautomerism as there is a presence of alpha hydrogen atoms.