Question: What reagents are needed to convert${\mathbf{\left(}{\mathbf{CH}}_{\mathbf{3}}{\mathbf{CH}}_{\mathbf{2}}\mathbf{\right)}}_{\mathbf{3}}\mathbf{C}\mathbf{\equiv }\mathbf{CH}$to each compound?

a.

b.

c.

d.

The reagent may be defined as any chemical substance involving breaking and forming a sigma or pi bond. Reagent generally brings a pair of electrons to the substrate or takes a pair from the substrate.

(a) In this reaction, oxidation takes place as shown below:

Formation of reaction in (a)

(b) In this reaction, hydroboration oxidation takes place as shown below:

Formation of reaction in (b)

(c) In a substitution reaction, two changes occur: breaking the bond with leaving group and forming a bond with a nucleophile.

The reaction is shown below:

Formation of reaction in (c)

(d) NaH (Base) abstract alpha hydrogen, then substitution takes place as shown below:

Formation of reaction in (d)