JEE Main Chemistry question

Tautomerism is exhibited by

(A)An aromatic-ring-conjugated vinyl alcohol (phenol-like stabilized enol)
(B)A cyclic 1,3-diketone with no accessible flanking α-H
(C)Acetophenone, C₆H₅–CO–CH₃Correct
(D)A substituted phenol-carboxylic acid with no α-H to a carbonyl

Answer: (C)

Solution

Acetophenone has acidic α-hydrogens on its methyl group adjacent to the carbonyl, which can migrate to oxygen to give the enol tautomer C₆H₅–C(OH)=CH₂ — a standard case of keto–enol tautomerism. An aromatic-ring-stabilized

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-139115