Question:

Strongest nucleophile is:

Updated On: Jun 23, 2023
  • $ RN{{H}_{2}} $
  • $ ROH $
  • $ C_{6}H_{5}O^{-} $
  • $ CH_{3}O^{-}$
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The Correct Option is D

Solution and Explanation

Nucleophile is electron rich or negatively charged species. $R \overset{\bullet \,\bullet}{ N } H _{2}$ and $\underset{\overset{\bullet \,\bullet}{}}{\overset{\underset{\bullet \,\bullet}{}}{O}} H$ are weaker nucleophile because they don't have negative charge. The strength of $C _{6} H _{5} O ^{-}$, decreases due to presence of benzyl group which withdraws electrons from oxygen due to $-I$ effect. $CH _{3} O ^{-}$is strongest nucleophile because methyl group increases the electron density on oxygen, since it shows $+I$ effect.
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