Naming Ethers - Video Tutorials & Practice Problems
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concept
Rules for Naming Ethers Concept 1
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In this video, we're gonna take a look at naming ethers. Now, recall ethers possess an oxygen atom connected to two al pal groups. Here, we're going to say because of this ethers have a unique naming system here, we'd say the parent name is Ether. And the way we look at our naming system is that we're gonna have our Alke substituents. So substituent one, substituent two as the beginning of the name and then we're gonna edit with Ether. This is the unique approach we're gonna take to naming all the types of ethers. We're about to see.
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example
Naming Ethers Example 1
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1m
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Here in this example, question, it says name the following ether compound. In order to accomplish this, we're gonna utilize the following three steps. Step one, we have to identify the two al Kel groups connected to our oxygen atom. So here is our oxygen atom here and we have this alke group connected to it and this all kill group connected to it here. This has 1234 carbons. So this would be a beetle group and this is only a metal group. Step two name the two alkyl groups alphabetically as substituents. So here we're going to say, we know we have a beauty and a methyl group connected to the oxygen. If there are identical, alkyl groups use the numerical prefix dye here, they're not the same. So we don't have to say like dimethyl or dibutyl. So we're gonna say here butyl methyl step three and the name of the compound with ether and then write the name with spaces. So there's a space between Butle and methyl and then the end of the name ether. So this would be bey methyl ether.
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Problem
Problem
Provide the name for the following ether.
A
tert-butyl pentyl ether
B
sec-butyl pentyl ether
C
sec-butyl pentanoate
D
pentyl sec-butyl ether
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Problem
Problem
Which structure represents isobutyl propyl ether?
A
B
C
D
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concept
IUPAC Rules for Naming Ethers Concept 2
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35s
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The Iupac rules for naming ethers are very similar to naming alkanes with substituents. Here, we're going to say that the smaller al keel group is treated as an Al Coxie substituent. Now, what's an al cocky substituent? Well, that's just the smaller al keel group combined with the oxygen atom here. The naming convention will be the location of our substituents. One of them being an Al Coxie substituent and then the parent name. So these are the approaches we're gonna take when coming to name these ethers under the Iupac naming system.
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example
IUPAC Rules for Naming Ethers Example 2
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2m
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Give this systematic name for the following ether. Now, here, step one is we have to identify the two LQ groups connected to the oxygen atom. And we're gonna say that the larger al Q group is assigned the parent name according to the prefixes. So if we take a look at this ether, this side here has a total of four carbons involved. So if we look, we have four carbons involved here and this side only has two. So it's gonna be the one on the left side that's gonna form the parent name. Step two is we have to sign names to all substituents. All right. So the way we're gonna look at this is this side has the most carbons involved, but we still have to operate along the whole idea of substituents and longest chain. We're going to say that the smaller Al Kel by default will become the alcoy substituent. No, be connected to the oxygen. So here this is a, this is a substituent for us. Yes. So this is a substituent and we have to look and see what the longest carbon chain is. The longest carbon chain is 123 which would mean that this up here is also a substitute, right? So we have two substituents on a three carbon chain. All right. So start number the chain from the um we're gonna say the closest substituent. If a tie between substituents compare the next closest substituent, there was no tie because if we make this carbon one, that's because the substituents already here. If we made this and one, we'd have to go 12 before we get to a substituent right now. If still a tie, then number in alphabetical order, which we didn't need to do. All right. So we have our structure here. Again, this is a substituent and this becomes a substituent. And then we repeat steps from naming our Keynes with substituents. So, coming back up here, we're going to say that this is a one carbon substituent. So this is a methyl. This here is an alcoy substituent since it's combined with the oxygen, a two carbon substituent is ethyl, but it's no longer an ethyl because it's combined with the oxygen. So it becomes an oxy. All right. So now we're going to say that the longest carbon chain is three carbons, long, three carbons long is propane. And then the two substituents E comes before M. So on carbon one, we have an oxy on carbon two, we have a methyl. So this would be one oxy, two methyl propane. This will be the name of this following ether
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Problem
Problem
Provide both the common and IUPAC name for the following ether.
