The SN2 reaction of 1-chloro-3-methylbutane with sodium methoxide is relatively slow, but can be accelerated by the addition of a small amount of NaI. How is this catalysis best explained?

Engineering

Chemistry

Nucleophilic Substitution

Leaving group tendency

Electrophilic addition

Question

The S_N2 reaction of 1-chloro-3-methylbutane with sodium methoxide is relatively slow, but can be accelerated by the addition of a small amount of NaI. How is this catalysis best explained?

A

S_N2 reaction of iodide ion converts the alkyl chloride to the more reactive alkyl iodide

B

The sodium cation helps pull off the chloride anion

C

The NaI changes the mechanism to S_N1

D

The iodide anion activates the methoxide nucleophile

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Due to nhalogen with NaI exchange in aprotic solvent rate of reaction increases.