Sn2 mechanism
Which of the following undergoes substitution by the SN2 mechanism at the fastest rate?
a. 1-Bromo-2-methylbutane
b. 2-Bromo-2-methylbutane
c. 2-Bromo-3-methylbutane
d. 1-Bromo-2,2-dimethylbutane
e. 2-Bromo-2,3-dimethylbutane
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