Identify the compound that exhibits tautomerism:
Identify the compound that exhibits tautomerism:
The correct option is C 2-Pentanone
Lets just first draw the structure of each molecule.
Lactic acid -- CH3-CH(OH)-COOH
Now lets recall the defination of tautomerism.
It is a phenomenon in which a single compound exists in two readily interconvertible structures that differ in the relative position of atleast one atomic nucleus,generally hydrogen.Tautomeric structures are obtained by the simultaneous shift of H atom and double bond at1 and 3 position.That is why it is also called 1,3-shift.It is further called desmotropism or dynamic isomerism or kryptomerism .
This is only possible keto to enol form conversion and one of the necessary conditions for tautumerism is the presence of α-hydrogen
→ α-hydrogen is present on α- carbon
Therefore these conditions are possible only in option(C)
CH3−O||C−CH2−CH2−CH3Keto form⇋CH3−OH|C=CHCH2CH3Enol form
2-Pentanone
Lets just first draw the structure of each molecule.
Lactic acid -- CH3-CH(OH)-COOH
Now lets recall the defination of tautomerism.
It is a phenomenon in which a single compound exists in two readily interconvertible structures that differ in the relative position of atleast one atomic nucleus,generally hydrogen.Tautomeric structures are obtained by the simultaneous shift of H atom and double bond at1 and 3 position.That is why it is also called 1,3-shift.It is further called desmotropism or dynamic isomerism or kryptomerism .
This is only possible keto to enol form conversion and one of the necessary conditions for tautumerism is the presence of α-hydrogen
→ α-hydrogen is present on α- carbon
Therefore these conditions are possible only in option(C)
CH3−O||C−CH2−CH2−CH3Keto form⇋CH3−OH|C=CHCH2CH3Enol form
