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Which compound in each of the following pairs will react faster by SN1 reaction in aqueous KOH? Give reason :(a) CH3 – CH2 – Br or CH3 – CH2 – Cl(b) CH3 – CH2 – CH2 – CH2 – X or (CH3)3CX |
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Answer» (a) CH3–CH2–Br is more reactive towards SN1 because it have good leaving group Rate of SN1 ∝ Leaving tendency of leaving group (b) (CH3)3C–X is more reactive towards SN1, due to formation of stable 3º carbocation. Rate of SN1 ∝ Stability of carbocation |
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