Write the IUPAC name of- `CH_(3)-O - underset(CH_(3))underset(|)CH-CH_(2)-CH_(3)`

Options

A. 3-methoxy butane
B. 2-methoxy butane
C. 3-methyl-3-methoxy propane
D. Butoxy methane

Explanation

To determine the IUPAC name of the compound `CH₃O-CH(CH₃)-CH₂-CH₃`, we will follow these steps:

### Step 1: Identify the longest carbon chain
The longest continuous carbon chain in the compound has 4 carbon atoms. This chain is identified as the parent chain.

### Step 2: Number the carbon chain
Number the carbon chain starting from the end nearest to the functional group (in this case, the methoxy group -OCH₃). The numbering will be as follows:
- Carbon 1: CH₃ (methyl group)
- Carbon 2: O-CH₃ (methoxy group)
- Carbon 3: CH₂
- Carbon 4: CH₃

### Step 3: Identify and name the substituents
The substituent in this compound is a methoxy group (-OCH₃) attached to the second carbon of the main chain.

### Step 4: Combine the names
The substituent is named first, followed by the name of the parent chain. Since the methoxy group is on the second carbon, we write it as "2-methoxy". The parent chain with 4 carbon atoms is called "butane".

### Step 5: Write the final IUPAC name
Putting it all together, the IUPAC name of the compound is **2-methoxybutane**.

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