question_answer

Which of the following carboxylic acids undergoes decarboxylation easily?

A) \[{{C}_{6}}{{H}_{5}}COCOOH\]                  

B) \[{{C}_{6}}{{H}_{5}}COHC{{H}_{2}}COOH\]

C) \[{{C}_{6}}{{H}_{5}}CHOHCOOH\]            

D) \[{{C}_{6}}{{H}_{5}}\underset{\begin{smallmatrix}  | \\  N{{H}_{2}} \end{smallmatrix}}{\mathop{CH}}\,COOH\]

Correct Answer: B

Solution :

                \[\beta \] - keto carboxylic acids readily undergo carboxylation. They get decarboxylated just by heating as