Step 1: Analyze dehydration reactions.
Dehydration of alcohols typically produces alkenes. \( \text{C}_6 \text{H}_6 \) (benzene) is not a product of dehydration of an alcohol.
Step 2: Conclusion.
\( \text{C}_6 \text{H}_6 \) is not a product of dehydration.
Final Answer:
\[
\boxed{\text{C}_6 \text{H}_6}
\]