What is the correct IUPAC name for the following compound?
A)3-methylpentanol
B)2-ethyl-1-butanol
C)2-ethylbutanol
D)1-ethyl-2-butanol

Question

What is the correct IUPAC name for the following compound? 
A)3-methylpentanol 
B)2-ethyl-1-butanol 
C)2-ethylbutanol 
D)1-ethyl-2-butanol

Quizplus · Accepted Answer

The parent chain is a four-carbon chain, which forms a butyl group. The longest continuous chain containing the hydroxyl group is a three-carbon chain, giving the suffix -ol. The location of the hydroxyl group is at the first carbon of the butyl group, so it is named 1-butanol. There is also a two-carbon chain attached to the second carbon of the butyl group, which is an ethyl group, so the name becomes 2-ethyl-1-butanol. Option A is incorrect because the compound contains four carbon atoms in the parent chain, not five. Option C is also incorrect because it doesn't specify the location of the hydroxyl group. Option D is incorrect because it would be named 1-ethyl-2-butanol if the ethyl group was attached to the first carbon of the butyl group.

What Is the Correct IUPAC Name for the Following Compound