MCQ
Arrange the following in decreasing order of reactivity towards $EAS$ (electrophilic aromatic substitution)
- ✓$a > b > c$
- B$c > b > a$
- C$a > c > b$
- D$c > a > b$
✓
Answer
Correct option: A.
$a > b > c$
a
$(a)$ $-CH_3 > -CD_3 > -CT_3$
Order of hyperconjugation on the basis of bond energy.
$(a)$ $-CH_3 > -CD_3 > -CT_3$
Order of hyperconjugation on the basis of bond energy.
Strong bond means less hyperconjugation.
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