39E - Organic Chemistry (Mcmurry)

Question

Draw all isomers of $C_4{H}_{9}Br$, name them, and arrange them in order of decreasing reactivity in the  $S_{N}2$reaction:

Step-by-Step Solution

Answer

Isomers

Reactivity: 

Isomers

Isomers are the molecules with the identical molecular formula but differ in the arrangements of atoms in space.

When atoms assume different configurations, the phenomenon is termed isomerization.

 

S N 2 reaction

It is a nucleophilic substitution reaction in which an old bond is broken, and a new bond is formed. Both processes co-occur. Hence, it’s a single-step reaction.

The two reacting species are involved in the rate-determining steps.

 $S_{N^2}$$S_{N^2}$ reactions are fast shown with the primary bromoalkane than the secondary bromoalkane 

So, the reactivity of the isomers of bromobutane is shown: