Verified Solution • 2025–26 Session
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QJEEAdv21Ch9991: JEE Advanced 2021 Chemistry - Class 12 JEEAdv21Ch9991 Solution: The reaction of Q with PhSNa yields an organic compound (major…
The reaction of Q with PhSNa yields an organic compound (major product) that gives positive Carius test on treatment with Na2O2 followed by addition of BaCl2. The correct option(s) for Q is (are)
Multiple Choice Options
- A https://ik.imagekit.io/novatra/photos/0b0df076de622e64c4ca612a1b6ee0bed421516028248ac52bb39de37f2728be.webp
- B https://ik.imagekit.io/novatra/photos/6fbb4d8e42107a12f4ff30f2b1b72907bf360d4e097fe969bd78ccf963478377.webp
- C https://ik.imagekit.io/novatra/photos/a06958e085fd7931256ff2edc996c7b050c9334f8c796fb750c13001496f82b7.webp
- D https://ik.imagekit.io/novatra/photos/ef1f44afeec23e9e1de95d4e71814d60e19abfd0715e1c7b79a8454246bf9962.webp
Step-by-Step Verified Solution
PhSNa replaces F from o- and p-dinitro- fluorobenzene via nucleophilic aromatic substitution.
PhSNa replaces Cl from compound D via nucleophilic bimolecular substitution reaction.
In case of compound B and C, nucleophilic substitution is not possible neither by SNAr or SN2 . because, the electron withdrawing group is present at meta-position and halogen is attached to sp2-carbon.
Positive Carius test is given by compound containing halogen, sulphur and phosphorus. So, only compound A and D reacts with PhSNa to gives a positive Carius test on treatment with Na2O2 followed by addition of BaCl2.
