In Class: Benzene -> Chlorobenzene. On Exam: Benzene -> complex molecule with stereocenters. What reagents are missing?

The starting material is benzene, and the product is chlorobenzene. This is a halogenation reaction.

Benzene undergoes electrophilic aromatic substitution with chlorine in the presence of a Lewis acid catalyst.
The reagents are chlorine gas ($\text{Cl}_2$) and iron(III) chloride ($\text{FeCl}_3$) or aluminum chloride ($\text{AlCl}_3$).

The reaction is:

The reagents for the "in Class" reaction are $\boxed{\text{Cl}_2, \text{FeCl}_3}$.

On Exam:
The "On Exam" reaction shows benzene being converted into a highly complex polycyclic molecule with multiple functional groups (ketone, amine) and chiral centers. This type of transformation from benzene is not a single-step reaction. It represents a multi-step synthesis, often involving many different reaction types (e.g., Friedel-Crafts reactions, reductions, oxidations, cyclizations, stereoselective steps) to build such a complex structure. It is a challenging synthetic problem, not a simple one-step conversion.