KCET · Chemistry · General Organic Chemistry
The correct IUPAC name of 
is
- A Tertiary butoxy ethane
- B 1,1-Dimethyl-1-ethoxyethane
- C 2-ethoxy-2-methyl propane
- D Ethoxy tertiary butane
Answer & Solution
Correct Answer
(C) 2-ethoxy-2-methyl propane
Step-by-step Solution
Detailed explanation
To find the correct IUPAC name for the given ether, we follow these steps:
1. Identify the longest continuous carbon chain to serve as the parent alkane. The alkyl groups attached to the oxygen atom are an ethyl group (\(-C_2H_5\)) and a tert-butyl group (\(-C(CH_3)_3\)).
2. The longest carbon chain in the tert-butyl group has 3 carbon atoms. Therefore, the parent alkane is propane.
3. Number the parent chain to give the substituents the lowest possible locants. Numbering from either end of the 3-carbon chain gives the central carbon the number 2.
4. Identify the substituents attached to the parent chain at carbon-2:
- A methyl group (\(-CH_3\))
- An ethoxy group (\(-O-C_2H_5\))
5. Arrange the substituents in alphabetical order. 'Ethoxy' comes before 'methyl'.
Combining these parts, the IUPAC name is 2-ethoxy-2-methylpropane.
Answer: 2-ethoxy-2-methyl propane
1. Identify the longest continuous carbon chain to serve as the parent alkane. The alkyl groups attached to the oxygen atom are an ethyl group (\(-C_2H_5\)) and a tert-butyl group (\(-C(CH_3)_3\)).
2. The longest carbon chain in the tert-butyl group has 3 carbon atoms. Therefore, the parent alkane is propane.
3. Number the parent chain to give the substituents the lowest possible locants. Numbering from either end of the 3-carbon chain gives the central carbon the number 2.
4. Identify the substituents attached to the parent chain at carbon-2:
- A methyl group (\(-CH_3\))
- An ethoxy group (\(-O-C_2H_5\))
5. Arrange the substituents in alphabetical order. 'Ethoxy' comes before 'methyl'.
Combining these parts, the IUPAC name is 2-ethoxy-2-methylpropane.
Answer: 2-ethoxy-2-methyl propane
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