The IUPAC name of compound
`CH_(3)OCH_(2)CH_(2)CH_(2)OCH_(2)CH_(3)` is

Options

A. Ethylmethylpropyl diether
B. Ethylmethoxypropyl ether
C. 3 - Ethoxy -1- methoxypropane
D. 1 - Ethoxy -3- methoxypropane

Answer

To determine the IUPAC name of the compound \( CH_3OCH_2CH_2CH_2OCH_2CH_3 \), we can follow these steps:

### Step 1: Identify the Structure
The given compound can be broken down into two parts: a methoxy group (\( CH_3O- \)) and an ethoxy group (\( -OCH_2CH_3 \)). The structure can be visualized as:
- \( CH_3O- \) (methoxy)
- \( -OCH_2CH_2CH_2- \) (the chain of three carbon atoms)
- \( -OCH_2CH_3 \) (ethoxy)

### Step 2: Number the Carbon Chain
To name the compound, we need to number the carbon chain. We can start numbering from the end closest to the first substituent:
1. Start numbering from the left:
- \( CH_3O \) is carbon 1
- \( CH_2 \) is carbon 2
- \( CH_2 \) is carbon 3
- \( CH_2 \) is carbon 4
- \( OCH_2CH_3 \) is carbon 5

### Step 3: Identify the Substituents
From the numbering:
- At carbon 1, we have a methoxy group (\( -OCH_3 \)).
- At carbon 4, we have an ethoxy group (\( -OCH_2CH_3 \)).

### Step 4: Combine the Names
In IUPAC nomenclature, we list the substituents in alphabetical order:
- Ethoxy (from carbon 4)
- Methoxy (from carbon 1)

### Step 5: Determine the Main Chain
The main chain consists of 5 carbon atoms, which corresponds to the root name "pentane" since all the bonds are single bonds.

### Step 6: Write the Complete Name
Putting it all together, we have:
- The substituents are ethoxy and methoxy.
- The main chain is pentane.
- The complete IUPAC name is **4-ethoxy-1-methoxypentane**.

### Final Answer
The IUPAC name of the compound \( CH_3OCH_2CH_2CH_2OCH_2CH_3 \) is **4-ethoxy-1-methoxypentane**.

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