`IUPAC` name of the compound `BrCH_(2)-undersetunderset(CONH_(2))(|)(CH)-CO-CH_(2)-CH_(2)CH_(3)` is

Options

A. `2`-Bromomethyl-`3`-oxohexanamide
B. `1`-Bromo-`2`-amido-`3`-oxohexane
C. `1`-Bromo-`2`-amido-n-propylketone
D. `3`-Bromo-`2`-proponyl-propanamide

Answer

To determine the IUPAC name of the compound `BrCH_(2)-undersetunderset(CONH_(2))(|)(CH)-CO-CH_(2)-CH_(2)CH_(3)`, we will follow these steps:

### Step 1: Identify the main functional groups
The compound contains an amide group (CONH2) and a ketone group (C=O). According to IUPAC nomenclature rules, the amide group takes precedence over the ketone group when numbering the carbon chain.

### Step 2: Determine the longest carbon chain
Count the number of carbon atoms in the longest continuous chain that includes the functional groups. In this case, we have a total of 6 carbon atoms in the main chain.

### Step 3: Number the carbon chain
Start numbering the carbon chain from the end nearest to the highest priority functional group, which is the amide. The numbering will be as follows:
1. Amide carbon (C=O and NH2)
2. Carbon with the bromine (Br)
3. Carbon with the ketone (C=O)

Thus, the numbering will be:
1. C1: Amide (C=O)
2. C2: Carbon with Br (CH2Br)
3. C3: Carbon with ketone (C=O)
4. C4: CH
5. C5: CH2
6. C6: CH3

### Step 4: Identify substituents and their positions
- The bromine substituent (Br) is located on carbon 2.
- The ketone functional group is located on carbon 3.

### Step 5: Construct the name
Combine the substituents and the main functional group:
- The bromine substituent is named as "2-bromo".
- The main chain is a hexanamide (since there are 6 carbons and an amide group).
- The ketone group is indicated in the name as part of the main chain.

Putting it all together, the IUPAC name of the compound is:
**2-bromo-3-hexanamide**

### Final Answer
The IUPAC name of the compound is **2-bromo-3-hexanamide**.

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