What is the IUPAC name for the following compound?
A) 3-ethyl-2-methyloxirane
B) 2-ethyl-3-methyloxirane
C) 2-ethyl-1-methyloxypentane
D) 1-ethyl-2-methyloxypentane
E) none of these

Question

What is the IUPAC name for the following compound? 
A) 3-ethyl-2-methyloxirane 
B) 2-ethyl-3-methyloxirane 
C) 2-ethyl-1-methyloxypentane 
D) 1-ethyl-2-methyloxypentane 
E) none of these

Quizplus · Accepted Answer

The compound is a substituted oxirane, also known as a epoxide, with a methyl group on the 2 position and an ethyl group on the 3 position. The parent chain is 3 carbons long, so the suffix is -oxirane. Since the ethyl group is on the 3 position and the methyl group is on the 2 position, the name is 2-ethyl-3-methyloxirane.

What Is the IUPAC Name for the Following Compound