1. Tardigrade
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  3. Chemistry
  4. Which of the following is least reactive towards SN1 ?

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Q. Which of the following is least reactive towards $S_{N}1$ ?

NTA AbhyasNTA Abhyas 2020Haloalkanes and Haloarenes

Solution:

Here Solution is least reactive towards $S_{N}1$ .

Rate of $S_{N}1 \propto $ stability of carbocation

Solution

$\left(A\right)\Rightarrow $ Anti aromatic

$\left(B\right)\Rightarrow $ Non-aromatic (no resonance)

$\left(C\right)\Rightarrow $ Non-aromatic (resonance)

$\left(D\right)\Rightarrow $ Aromatic

Stability order

Aromatic > non-aromatic > anti-aromatic

So D > C > B > A.