Q57a - Organic Chemistry (Mcmurry)

Question

Question: Order each of the following sets of compounds with respect to reactivity:

a.

Step-by-Step Solution

Answer

Answer

Step1: S N 2 reaction

It is a nucleophilic substitution reaction in which old bond is break and new bond is formed both the process occur simultaneously. Hence, it’s a single step reaction.

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

Step2: Reactivity towards S N 2 reaction

As the reaction is single step reaction so, no intermediate is formed and S_N2  occur fast with primary alkane than secondary alkane.

S_N2  occur fast with those reacting species which have best leaving group 

So, 

                                    Reactivity order