JEE Main · 2024 · Shift-ImediumGOC-044

Which of the following has highly acidic hydrogen?

General Organic Chemistry (GOC) · Class 11 · JEE Main Previous Year Question

Question

Which of the following has highly acidic hydrogen? image

Options
  1. a

    Structure - a

  2. b

    Structure - b

  3. c

    Structure - c

  4. d

    Structure - d

Correct Answerd

Structure - d

Detailed Solution

Step 1: Analyzing Acidic Hydrogens in Ketones Acidity depends on the resonance stabilization of the conjugate base (enolate ion). image Step 2: Determining Maximum Acidity The enolate formed in structure (d) is stabilized by resonance with two adjacent \ceC=O\ce{C=O} groups, making these hydrogens highly acidic (pKa9pK_a \approx 9).

Answer: (d)\boxed{\text{Answer: (d)}}

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