Question

Addition of water to an alkyne gives a keto-enol tautomer product. Draw an enol that is in equilibrium with the given ketone. Addition of water to an alkyne gives a keto-enol tautomer product. Draw an enol that is in equilibrium with the given ketone.

Addition of water to an alkyne gives a keto-enol tautomer product. Draw an enol that is in equilibrium with the given ketone.

Answer 1

Concepts and reason

A compound containing ketone functional group is given, its enol form needs to be drawn. Generally, tautomer is formed by the migration of hydrogen atom in the structure. Thus, form the enol tautomer of the given ketone molecule by the migration of H atom from the adjacent carbon atom.

Fundamentals

Tautomer is formed by the migration of hydrogen atom from the adjacent carbon atom in the structure. Tautomer readily inter-convert into one another and there is always a dynamic equilibrium between them. Consider the following compound that is showing keto-enol tautomer:

Write the enol form of the given compound by migrating the ${\rm{\alpha }} - {\rm{H}}$ as shown below:

Write the enol form of the given compound by migrating the ${\rm{\alpha }} - {\rm{H}}$ as shown below:

Ans:

The enol form or the tautomer that is present in equilibrium with the given ketone is shown below: