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JEE Main202116 Mar 2021Evening ShiftChemistryCarboxylic Acid DerivativesActual

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

Options

  1. ANaBH 4 , H 3 O +
  2. BLiAlH 4
  3. CAlkaline KMnO 4 , H +
  4. DHCl , Zn - Hg

Correct answer

C. Alkaline KMnO 4 , H +

Step-by-step solution

KMnO 4 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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