Phenol on treatment with C O 2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with C H 3 C O 2 O in the presence of catalytic amount of H 2 S O 4 produces:

Step-by-step solution

Two different reactions are taking place here Kolbe–Schmitt reaction and esterification reaction (treatment of the product of Kolbe–Schmitt reaction with ( CH 3 CO ) 2 O   ( ester ) . The two reactions can be written as follows: 1.Kolbe–Schmitt reaction: reaction of phenol with carbon dioxide in the presence of sodium hydroxide, followed by acidification converts phenol to 1−1− hydroxybenzoic acid (Salicylic acid). 2.Esterification reaction: The salicylic acid is then reacted with