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Question: Answered & Verified by Expert

In the above reaction, the reagent "A" is :

ChemistryCarboxylic Acid DerivativesJEE MainJEE Main 2021 (16 Mar Shift 2)
Options:
  • A NaBH4,H3O+
  • B LiAlH4
  • C Alkaline KMnO4,H+
  • D HCl,Zn-Hg
Solution:
2373 Upvotes Verified Answer
The correct answer is: Alkaline KMnO4,H+

KMnO4 in presence of acidic medium shows oxidation reaction. 

It converts carbon into acid if carbon is connected to benzene group directly and having at least one hydrogen with it then it can be converted into acid otherwise not. As shown below:

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