Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

Explain Question: Which of the following carboxylic acids do not undergo decarboxylation simply on heating ?

Concept: decarboxylation

Solution:

Carboxylic acids with a 𝛽-keto group or those that are geminal dicarboxylic acids undergo decarboxylation easily on heating because the reaction is facilitated by a stable cyclic transition state. Simple monocarboxylic acids, such as trifluoroacetic acid (structure 1) and acrylic acid (structure 2), and bridge headed carboxylic acid (structure 3) lack this structural feature and do not readily decarboxylate on simple heating. 

Final Answer: (A), (B) and (C)