Ether Naming

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Rhea Kundan_2G
Posts: 10
Joined: Wed Nov 18, 2015 3:00 am

Ether Naming

Postby Rhea Kundan_2G » Sun Mar 12, 2017 10:21 pm

On page 100 of the course reader, we are given the example of:
CH3CH2CHCH2CH2OCH2CH3
..............|
..............CH3

and the resulting name is 1-ethoxy-3-methylpentane. I remember in class, Dr. Lavelle mentioned that you pick the longest continuous C-C chain because that usually also has the substituents on it. In this example, there are 5Cs on one side of the O and 2Cs on the other side of the O, so you pick the chain with 5Cs for the name. Like Dr. Lavelle said, this compound also has its substituent on the longer chain. However, I was wondering what if the substituent was on the shorter chain? Does this happen? And if so, would you still mention the substituent when naming the compound?

ntyshchenko
Posts: 21
Joined: Wed Sep 21, 2016 2:59 pm

Re: Ether Naming

Postby ntyshchenko » Sun Mar 12, 2017 10:58 pm

If this substituent was on the shorter chain then it would simply be 1-propoxy-pentane since that "substituent" is moved to the shorter side and becomes just a part of the chain which is no longer (eth)oxy but (prop)oxy


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