Question

Which among the following is a non-benzenoid aromatic compound?

• A. Toluene
• B. Phenanthrene
• C. Naphthalene
• D. Thiophene

Answer 1

The correct option is D Thiophene

Toluene, phenanthrene, and naphthalene are aromatic compounds because they contain atleast one benzene ring.


Thiophene is an aromatic compound and also does not contain benzene ring so it is a non-benzenoid aromatic compound.
Thiophene is a aromatic because it has six $\pi$ electrons in a planar, cyclic, conjugated system.