IUPAC name of the compound
H2N−O||C−CH|CH−CH3|CH3−C(CH3)3?
3, 3-Dimethyl-2-(1-methylethyl)butanamide
Let's decide about the parent chain first. There are two possibilities.
In the figure I ⇒ Number of substituents = 2
{at C2 and C3}
In the figure II ⇒ Number of substituents = 3
{at C2, C3 and again C3}
Therefore, the parent chain will be
word root = But
Only single bonds between carbon.
Therefore, primary suffix = ane
Functional group → NH3 ⇒ Amide
The secondary suffix - amide
So, it will be butanamide
Now, let's take a look at substituents.
There are two methyl groups at C3.
Therefore, 3,3 -dimethyl
And for C2 the primary chain consists of two carbons and one methyl group attached to first carbon.
Therefore, 2-(1-methylethyl)
So, the IUPAC name of the compound is 3,3-Dimethyl -2-(1-methylethyl)butanamide