Question

Complete the following reaction :

Hint:

Catalytic hydrogenation of any benzene derivative using Ni/Heat usually results in the corresponding cyclohexane derivative.

Answer 1

Step 1: Understanding the Concept:
The catalytic hydrogenation of aromatic compounds involves the addition of hydrogen to the unsaturated carbon-carbon double bonds in the presence of a catalyst like Nickel.
Step 3: Detailed Explanation:
When Phenol (\(C_6H_5OH\)) is treated with hydrogen gas (\(H_2\)) in the presence of a Nickel catalyst at \(433 \text{ K}\), the aromatic ring undergoes complete reduction.
The three double bonds in the benzene ring are saturated by adding three molecules of \(H_2\).
The product formed is a saturated cyclic alcohol.
Reaction:
\[ C_6H_5OH + 3H_2 \xrightarrow[433K]{Ni} C_6H_{11}OH \text{ (Cyclohexanol)} \]
Step 4: Final Answer:
The product is Cyclohexanol.