10.7 Which alkyl halide from the following pairs would you expect to react more rapidly by an mechanism? Explain your answer.
In these kinds of cases, we see where is the substituent is attached i.e., how far from the halide group. It can be clearly seen that the methyl group attached in 1-bromo-2-methylbutane is near than that attached in 1-bromo-3-methyl butane.
Hence the rate of reaction will be faster in case of 1-bromo-3-methylbutane.