The IUPAC name of `CH_3-underset(C_3H_7)underset(|)"CH"-underset(C_2H_6)underset(|)"CH"-underset(C_2H_5)underset(|)"CH"-CH_3`

Options

A. 3,4 dlmethyl-4-ethyl Octane
B. 4-ethyl-3,5-dimethyl Ocatne
C. 2,3-dimethyl -4-Propyl Pentage
D. 5-ethyl-3-hexyne

Explanation

To determine the IUPAC name of the given organic compound, we will follow a systematic approach. Here’s a step-by-step solution:

### Step 1: Identify the Longest Carbon Chain
First, we need to identify the longest continuous carbon chain in the structure. In this case, the longest chain consists of 8 carbon atoms.

### Step 2: Number the Carbon Chain
Next, we will number the carbon chain. The numbering should be done in such a way that the substituents (branches) get the lowest possible numbers.

- Starting from one end of the chain, we will number the carbon atoms from 1 to 8.

### Step 3: Identify and Name the Substituents
Now, we will identify the substituents attached to the carbon chain:
- There are two ethyl groups (C2H5) and three methyl groups (C1H3) attached to the main chain.

### Step 4: Assign Locants to Substituents
We will assign locants (numbers) to the substituents based on their position on the main carbon chain:
- The first ethyl group is on carbon 2.
- The second ethyl group is also on carbon 2.
- The first methyl group is on carbon 3.
- The second methyl group is on carbon 5.
- The third methyl group is on carbon 4.

### Step 5: Combine the Names and Write the IUPAC Name
Now, we will combine the names of the substituents with their locants:
- The substituents will be listed in alphabetical order, regardless of their locants.
- Therefore, the name will be:
- 4,4-diethyl (from the two ethyl groups at carbon 2)
- 3,5-dimethyl (from the two methyl groups at carbon 3 and 5)

### Final IUPAC Name
Putting it all together, the final IUPAC name of the compound is:
**4,4-diethyl-3,5-dimethyl-octane**