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 reaction is the catalytic hydrogenation of phenol. Phenol is an aromatic compound containing a benzene ring.
Step 2: Detailed Explanation:
When phenol is treated with hydrogen gas in the presence of a Nickel catalyst at a temperature around 433 K, the aromatic ring undergoes complete reduction (addition of hydrogen).
The three double bonds of the benzene ring are saturated.
The reaction is:
\[ C_6H_5OH + 3H_2 \xrightarrow[433K]{Ni} C_6H_{11}OH \]
The product formed is a cyclic secondary alcohol called Cyclohexanol.
Step 3: Final Answer:
The product is Cyclohexanol.