Question

Construct a three-step synthesis of 2-methyl-2-butanol from 3-methyl-2-butanol by dragging the appropriate formulas into the bins. Note that each bin will hold only one item, and not all of the given reagents or structures will be used.

Answer 1

Answer:

            The three steps involved in conversion of 3-methyl-2-butanol to 2-methyl-2-butanol are as follow:

Step 1:

           In this step the dehydration of alcohol takes place in the presence of Phosphoric acid. This step is also called olefination reaction.

Step 2:

           In the second step one of the important intermediate called as epoxide is formed by reacting the corresponding alkene formed in first step with peracid (i.e. ethaneperoxoic acid).

Step 3:

           In this step reduction is carried out with Lithium Aluminium Hydride. The epoxide is opened by the hydride.

The reaction scheme is shown below.