Question

Question:What products would you expect from the reaction of 1-bromopropane with each of the following?

(f) Mg, then H₂O

Short answer

Answer

$$\begin{gathered} {\text{CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{Br+MgBr→CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{MgBr+H}}_2{\text{O→CH}}_3{\text{CH}}_2{\text{CH}}_3 \\ \text{Substitutionreaction} \end{gathered}$$

Step-by-step solution

'Step1: SN2 reaction

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

Two reacting species are involved in the rate-determining steps.

 Reaction of CH3CH2CH2Br+MgBr/H2O

$$\begin{gathered} {\text{CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{Br+MgBr→CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{MgBr+H}}_2{\text{O→CH}}_3{\text{CH}}_2{\text{CH}}_3 \\ \text{Substitutionreaction} \end{gathered}$$