91Ó°ÊÓ

PCC is a strong oxidizing agent that oxidizes primary alcohols into aldehydes and secondary alcohols into ketones.

${\mathrm{PBr}}_3$ is a brominating agent that converts an -OH group into a -Br group.

${\mathrm{SOCI}}_2$is a chlorinating agent that converts an -OH group into a –Clgroup.

Mg gets inserted into the carbon-halogen bond to form the organomagnesium reagent known as a Grignard reagent.They are useful for many nucleophilic attacks, such as opening of the epoxide ring to form alcohols.

The synthesis of compound a. is shown below:

Synthesis of a.

The synthesis of compound b is shown below:

Synthesis of b.

The synthesis of compound c. is shown below:

Synthesis of c

The synthesis of compound d. is shown below:

Synthesis of d.

The synthesis of compound e. is shown below:

Synthesis of e.