Organic Chemistry Basics 1 Question 2

2. The correct IUPAC name of the following compound is

(a) 2-methyl-5-nitro-1-chlorobenzene

(2019 Main, 9 April I)

(b) 3-chloro-1-methyl-1-nitrobenzene

(c) 2-chloro-1-methyl 1-4-nitrobenzene

(d) 5-chloro-4-methyl 1-1-nitrobenzene

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Answer:

Correct Answer: 2. (c)

Solution:

  1. The IUPAC name of the given compound is

2- chloro-1-methy 1-4-nitrobenzene

Here, the given compound contains two or more functional groups. So, the numbering is done in such a way that the sum of the locants is the lowest.