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Classification of Amines

Which one of ...

Question

Which one of the following is incorrect IUPAC name?

A

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B

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C

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D

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Solution

The correct option is A
When an organic compound contains two or more different functional groups, highest priority group is used as suffix and other functional group is used as prefix.
The choice of principal functional group is made on the basis of order of preferences:
$- C O O H > - S O_{3} H > - C O O R > - C O X > - C O N H_{2} > - C O N R_{2} > - C N > - N C > - C H O > (> C = O) > - O H > - S H > - N H_{2} > - N H R > - N R_{2} > (> C = C <) > (- C \equiv C -)$

Suffix used for $= O$ is -ketone. Hence, the correct numbering and IUPAC name will be:
Hence, the IUPAC name is incorrect in option (a). Hence, the correct answer is option (a).

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