Question

4-[4-(p-chloro phenyl)-4-hydroxy piperidinyl]-1-(4-fluorophenyl)-1-butanone is the IUPAC name of _______

• A. \( \text{Propranolol} \)
• B. \( \text{Haloperidol} \)
• C. \( \text{Droperidol} \)
• D. \( \text{Trifluperidol} \)

Hint:

Breaking down complex IUPAC names into their constituent parts (e.g., parent chain, functional groups, substituents and their positions) can help in matching them to the correct chemical structure or drug.

Answer 1

The Correct Option is B

The provided IUPAC name describes the chemical structure of haloperidol, which is a typical butyrophenone antipsychotic. Analyzing the name, we can identify key structural features: a butyrophenone backbone (1-butanone with a phenyl group at position 1), a 4-fluorophenyl substituent on the ketone, and a 4-(p-chlorophenyl)-4-hydroxypiperidinyl substituent at the other end of the butanone chain. This detailed structural description corresponds to the chemical structure of haloperidol. Propranolol is a beta-blocker, while droperidol and trifluperidol are also butyrophenone antipsychotics but with different substituent patterns than described in the IUPAC name.