IUPAC name of given organic compound `(CH_3)_2C(CH_2CH_3)CH_2CH(Cl)CH_3` is -

Options

A. 5 - Chloro - 3, 3 - dimethylhexane
B. 5 - Chloro - 2 - ethyl - 2 methylpentane
C. 2 - Chloro - 4 - ethyl - 4 methylpentane
D. 2 - Chloro -4, 4 - dimethylhexane

Answer

To determine the IUPAC name of the organic compound `(CH_3)_2C(CH_2CH_3)CH_2CH(Cl)CH_3`, we will follow these steps:

### Step 1: Identify the longest carbon chain
The first step in naming an organic compound is to identify the longest continuous carbon chain. In this case, we can see that the longest chain contains 6 carbon atoms.

### Step 2: Number the carbon chain
Next, we need to number the carbon chain. We will start numbering from the end closest to the substituents (in this case, the chlorine and the methyl groups).

The numbering is as follows:
1. CH3 (C1)
2. CH(Cl) (C2)
3. CH2 (C3)
4. C(CH2CH3) (C4)
5. CH(CH3) (C5)
6. CH3 (C6)

### Step 3: Identify and name the substituents
Now we identify the substituents on the main carbon chain:
- At C2, there is a chlorine (Cl) substituent.
- At C4, there are two methyl (CH3) groups.

### Step 4: Combine the substituents with their positions
According to IUPAC nomenclature:
- The substituents are listed in alphabetical order, regardless of their position numbers.
- The two methyl groups at C4 are indicated as "dimethyl".
- The chlorine at C2 is indicated as "chloro".

### Step 5: Write the full name
Putting it all together, we have:
- The substituents: 2-chloro and 4,4-dimethyl
- The base name for a 6-carbon chain is "hexane".

Thus, the full IUPAC name of the compound is **2-chloro-4,4-dimethylhexane**.

### Final Answer
**2-chloro-4,4-dimethylhexane**

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