Question

Question #265a7

Answer 1

The IUPAC name is `N`-(4-hydroxyphenyl)ethanamide.

Explanation:

The structure of paracetamol (also known as acetaminophen) is

To generate the name, you must first identify the functional groups — amide and phenolic `"OH"`.

The amide functional group has the higher priority, so the name ends in -amide.

The amide has a two-carbon chain, so the base name is ethanamide.

The substituent is a phenyl group with an `"OH"` at `"C-4"`, so the name becomes (4-hydroxyphenyl)ethanamide.

Since the substituent is itself substituted, its name is enclosed in parentheses.

The substituent is on the `"N"` atom, so the name is `N`-(4-hydroxyphenyl)ethanamide.