The label of a bromobutanoic acid bottle has been washed away. Someone is trying to relabel it with correct IUPAC name. Which of the following cannot be a name?
A
2-Bromobutanoic acid
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B
3-Bromobutanoic acid
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C
4-Bromobutanoic acid
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D
1-Bromo-3-butanoic acid
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Solution
The correct option is D 1-Bromo-3-butanoic acid In monocarboxylic acid, numbering always starts from carbon of -COOH group. Thus, substituent bromine cannot be present at first carbon and hence is wrong name.