Question

In each reaction box, place the best reagent and conditions from the list below. (Some reagents may be used more than once.)

Answer 1

Concepts and reason

The concept used to solve this problem is by using the given reagents, possible products will be formed in each step and then label it exactly in the given boxes in order to form the exact product.

Here, the starting reactant is propylene and the final product is epoxide.

Fundamentals

Sodium hydride ( ${\rm{NaH}}$ ) is used as base, which abstract the proton.

Hydroboration in the presence of tetrahydrofuran followed by the oxidation gives a primary alcohol.

Addition of ${\rm{B}}{{\rm{r}}_2}\;{\rm{and}}\;{{\rm{H}}_2}{\rm{O}}$ to the double bond forms a halohydrin product.

Sodium borohydride is used as a reducing agent for the conversion of aldehyde to primary alcohol and ketone to secondary alcohol.

Reduction of alkyne with ${{\rm{H}}_2}$ in the presence of Lindlar’s catalyst gives cis alkene. Similarly, the trans alkene is formed with ${\rm{Na}}$ in the presence of ${\rm{N}}{{\rm{H}}_3}\left( l \right)$ .

The reaction is as follows:

The reaction is as follows:

The reaction is as follows:

The reaction is as follows:

The reaction is as follows:

Ans:

The best reagents that are used in this reaction are as follows: