Question

The IUPAC name of

Is:
(a)- 2- Chlorocarbonyl ethylbenzoate
(b)- 2- Carboxyethyl benzoyl chloride
(c)- Ethyl-2-(chlorocarbonyl) benzoate
(d)- Ethyl-1-(chlorocarbonyl) benzoate

Answer 1

In the given compound, there are two functional groups present, i.e., the ester group and acid chloride group. While naming the compound, ester will be given preference and it will be named in the suffix part.

Complete answer:
The given compound in the question is:

So, it is an aromatic compound because there is a benzene ring present. There are two functional groups present on the benzene ring. The functional groups are the ester group and acid chloride.
Since there are two functional groups, one functional group will be given preference which will be written in the suffix part, and the other will be written in the prefix part.
So, in this ester will be given the preference and it will be written in the suffix part or we can also say that ethyl ester is the principal functional group.
The acid chloride functional group will be named chlorocarbonyl and it is present on the second carbon atom of the benzene ring. The ester part will be named ethyl benzoate because the ester group is between the benzene group and the ethyl group.
So, the IUPAC name of the compound will be Ethyl-2-(chlorocarbonyl) benzoate.

Therefore, the correct answer is option (c)- Ethyl-2-(chlorocarbonyl) benzoate.

Note:
While numbering the carbon atoms, the smallest number will be given to the carbon atom having the principal functional group. The compound can also be written as 2- Chlorocarbonyl ethylbenzoate but it is not the IUPAC name.