IUPAC name of `{:(" "H" "C_(4)H_(9)),(" |"" |"),(CH_(3)-C-C-CH_(3)),(" |"" |"),(" "C_(2)H_(5)CH_(3)):}` is

Options

A. 2-butyl-2-methyl-3-ethylbutane
B. 2-ethyl-3, 3-dimethylheptane
C. 3, 4, 4-trimethylheptane
D. 3, 4, 4-trimethyloctane

Answer

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

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

- The structure provided has multiple branches, but we need to find the longest straight chain of carbon atoms.
- By analyzing the structure, we can see that the longest chain consists of 8 carbon atoms.

### Step 2: Number the Carbon Chain
Next, we will number the carbon atoms in the longest chain.

- We start numbering from the end of the chain that gives the lowest numbers to the substituents (branches).
- If we number from one end, we can assign numbers to each carbon in the chain from 1 to 8.

### Step 3: Identify and Name the Substituents
Now, we need to identify the substituents attached to the main carbon chain.

- From the structure, we can see that there are two substituents: one is a propyl group (C3H7) and the other is an ethyl group (C2H5).
- We will note the positions of these substituents on the main chain.

### Step 4: Assign Positions to Substituents
We will assign the positions of the substituents based on the numbering of the main chain.

- For example, if the propyl group is attached to carbon 3 and the ethyl group is attached to carbon 5, we will note these positions.

### Step 5: Combine the Names
Now, we will combine the names of the substituents and the main chain.

- The substituents are listed in alphabetical order, followed by the name of the main chain.
- The main chain with 8 carbon atoms is called "octane".

### Step 6: Finalize the IUPAC Name
Finally, we will write the complete IUPAC name.

- If the propyl group is at position 3 and the ethyl group is at position 5, the name will be:
- 5-ethyl-3-propyl-octane.

### Final Answer:
The IUPAC name of the compound is **5-ethyl-3-propyl-octane**.

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