Answer BOTH parts a$)$ and b$).$

a$)$ Molecule $5$ is converted in a two$-$step reaction sequence into the racemic

product $6$

i$)$ Give necessary reagents for the reaction from $5$ into $C.$

ii$)$ Draw the structure of compound $C.$

iii$)$ Give necessary reagents for the reaction from $C$ into $6.$

iv$)$ Which strategy could be applied for an enantioselective synthesis of

compound $C?$