Q47 / 200 · WBJEE 2014 · Chemistry
When phenol is treated with $\mathrm{D}_{2} \mathrm{SO}_{4} / \mathrm{D}_{2} \mathrm{O},$ some of the hydrogens get exchanged. The final product in this exchange reaction is
- Correct answerA
- B
- C
- D
Solution
In acidic medium, phenol exists in following resonating structures.
Since, o/p positions are electron rich sites, so electrophile will attack on these site, i.e. hydrogen of these sites get exchanged by D (deuterium). Hence, the final product of the
Since, o/p positions are electron rich sites, so electrophile will attack on these site, i.e. hydrogen of these sites get exchanged by D (deuterium). Hence, the final product of theHence, the correct answer is option: 'A'.