Question

The IUPAC name of the following compound is

• A. 3-Hydroxy-5-carboxy-6-bromonitrobenzene
• B. 2-Nitro-3-hydroxy-6-carboxybromobenzene
• C. 2-Bromo-5-hydroxy-3-nitrobenzoic acid
• D. None of these

Answer 1

The correct option is C

2-Bromo-5-hydroxy-3-nitrobenzoic acid

As we know,

If different groups are attached to the benzene ring, then the following rules are kept in mind:

(a) The principal group is fixed as umber 1.

(b) The numbering of the chain is done in any direction (clockwise or anticlockwise) which gives lower number to the substituent.

(c) The substituents are written in alphabetical order.

Here, principal group is $-COOH$

Therefore,

Therefore,

2-Bromo-5-hydroxy-3-nitrobenzoic acid (alphabetical order)

$\Rightarrow benzene+oicacid$

$\Rightarrow benzoicacid$