Priority of Ethers

[Meghna Madhavan 2D]

Because ethers are unique and are treated as a substituent rather than a functional group, they do not get the same priority as other functional groups like alcohols or ketones. However, would an ether get priority over a double bond or not? For example, how do you name CH₃-O-CH₂-CH₂-CH=CH₂. Would it be methoxy-but-3-ene or 4-methoxy-but-1-ene? And does numbering have to do with having the lowest number or the priority of ethers versus double bonds?

[Chem_Mod]

CH₃-O-CH₂-CH₂-CH=CH₂
4-methoxy-but-1-ene is correct

I made this example. Work through it to clarify IUPAC naming of ethers.
(E)-6-(3-chloro-2-methylpropoxy)hex-2-ene

If I have time in my review session today at 4:30pm I'll go through it.

[Christina Kim 1E]

I am a little confused, because in the review packet that Idean distributed, it says that ethers get numbering priority over double bonds. Is that incorrect?

[Jiangyuan Luo 1K]

That's incorrect. Dr. Lavelle revised it.

[TramHo2G]

Are the highest priority groups in Professor Lavelle's example the chlorine and ether?