Carboxylic Acids and their Derivatives 2 Question 43
43. Which of the following carboxylic acids undergoes decarboxylation easily? Explain briefly.
(i) $\mathrm{C}{6} \mathrm{H}{5} \mathrm{COCH}_{2} \mathrm{COOH}$
(ii) $\mathrm{C}{6} \mathrm{H}{5} \mathrm{COCOOH}$
(iii) $\mathrm{C}{6} \mathrm{H}{5} \mathrm{CH}(\mathrm{OH}) \mathrm{COOH}$
(iv) $\mathrm{C}{6} \mathrm{H}{5} \mathrm{CH}\left(\mathrm{NH}_{2}\right) \mathrm{COOH}$
$(1995,2 M)$
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Solution:
- A $\beta$-keto acid undergo very fast decarboxylation
