Question

The IUPAC name of \(\text{CH}_3-\text{CH}_2-\text{O}-\text{CH}_2-\text{CH}(\text{CH}_3)_2\) is

• A. 3-Ethoxy-2-methylpropane
• B. 1-Ethoxybutane
• C. 1-Ethoxy-2-methylpropane
• D. 1-Ethoxy isobutane

Hint:

In ethers, always choose the longer carbon chain as the parent and name the shorter chain as an alkoxy substituent.

Answer 1

The Correct Option is C

Step 1: Identify the functional group.
The given compound contains an ether linkage \((\text{R}-\text{O}-\text{R}')\).

Step 2: Select the parent chain.
The longer carbon chain attached to oxygen is 2-methylpropane. Hence, it is selected as the parent hydrocarbon.

Step 3: Identify the alkoxy substituent.
The smaller group attached through oxygen is an ethoxy group \((-\text{OCH}_2\text{CH}_3)\).

Step 4: Assign position numbers.
The ethoxy group is attached at carbon number 1 of the parent chain.

Step 5: Final name.
The correct IUPAC name is 1-ethoxy-2-methylpropane.