Question

In the `IUPAC` name of the following compound, there something wrong. Find the mistake.

`N-`ethyl `-6-`oxo`-5-`propyl heptanamide
A. Principal functional group is incorrectly chosen
B. Incorrect prefix for locant is used
C. Parent chain is incorrectly selected
D. Locants name is not written in order of priority recommended by `IUPAC`.

Answer 1

Correct Answer - c
Here, amide group has higher priority than keto group, therefore former is the principla functional group and later is a locant. The longest carbon chain starting from carbon of the amide group would e the parent chain. Hence, in fact parent chain has eight carbon as `:`

Correct `IUPAC` name would be `N-`ethyl`-5-(1-`oxoethyl`)` octanamide.