Question

The reaction(s) that result(s) in the formation of aromatic species is/are 

• A. A
• B. B
• C. C
• D. D

Hint:

In organic chemistry, reactions involving electrophilic aromatic substitution or base-induced deprotonation can result in aromatic species formation.

Answer 1

The Correct Option is A, D

Step 1: Understanding aromaticity.
Aromatic species are cyclic, planar molecules with conjugated double bonds that follow Huckel’s rule: having 4n + 2 π-electrons, where n is a non-negative integer.
Step 2: Analyzing the options.
- (A) The reaction of Cl with SbCl$_5$ likely forms an aromatic species through an electrophilic aromatic substitution, where a chloride ion displaces another group to form a stable, aromatic intermediate.
- (B) The reaction of Br with AgBF$_4$ involves a halide exchange, which is not likely to result in an aromatic species unless the resulting compound is conjugated. This reaction does not form an aromatic species.
- (C) The reaction of phenyl ketone (Ph-C(=O)Ph) with NaH (sodium hydride) could result in the formation of an aromatic species, as NaH can act as a base, removing a proton to form an aromatic species through a subsequent reaction.
- (D) The reaction of Na with an aromatic species generally results in a metal insertion, not the formation of an aromatic compound.
Step 3: Conclusion.
The correct reactions that result in aromatic species are (A) and (C).