AP EAMCET · Chemistry · Haloalkanes and Haloarenes
Which of the following alkyl halide is most reactive towards substitution by \(\mathrm{S}_{\mathrm{N}} 1\) mechanism?
- A \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Br}\)
- B \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{I}\)
- C \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{F}\)
- D \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}\)
Answer & Solution
Correct Answer
(B) \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{I}\)
Step-by-step Solution
Detailed explanation
An \(\mathrm{S}_{\mathrm{N}} 1\) reaction involves two steps; formation of carbocation (which is the slow and thus, the rate-determining) and attack of the nucleophile on the \(\alpha\) - carbon. Among the given options, the \(\mathrm{C}-\mathrm{X}\) bond is weakest for…
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