Four aromatic carboxylic acids on heating with soda-lime at 630 K, give toluene as the only product. Write the structures of the four aromatic carboxylic acid.

Four aromatic carboxylic acids on heating with soda-lime at 630 K, giv

1.	Four aromatic carboxylic acids on heating with soda-lime at 630 K, give toluene as the only product. Write the structures of the four aromatic carboxylic acid.
Answer» Solution :SINCE all the four aromatic carboxylic acids on DECARBOXYLATION with soda-lime give toluene, THEREFORE, three of the acids MUST be o-, m- and p-toluic acids while the fourth must be phenylacetic acid as shown below :