Question

Which of the following names is/are correct for the given compound?
a) $4$-bromo-$2$-ethyl aniline
b) $4$-bromo-$2$-ethyl benzenamine
c) $4$-bromo-$2$-ethyl aminobenzene
d) $3$-bromo-$1$-ethyl benzenamine

• A. d only
• B. a and b only
• C. a, b and c only
• D. a, b, c and d

Answer 1

The correct option is C a, b and c only

The parent compound can be named as aniline or benzenamine or aminobenzene.
The numbering starts from the carbon-bearing amino group. The carbon-bearing ethyl group is numbered $2$ and the carbon-bearing bromine atom is numbered $4$.
Hence, the names (a) $4$-bromo-$2$-ethyl aniline, (b) $4$-bromo-$2$-ethyl benzenamine and (c) $4$-bromo-$2$-ethyl aminobenzene are correct.
Option C is correct.