In this video, we're going to take a look at how to name amines. Now, amines are compounds that have one or more alkyl groups connected to a nitrogen atom. Here we're going to say that amines have a unique naming system. Here, we're going to have our substituents connected to our nitrogen, so our substituents will form the beginning of the name, and we end the name with "amine." So remember this when we start naming these different types of amines that we're about to see.
Naming Amines - Online Tutor, Practice Problems & Exam Prep
Common Naming: Amines Concept 1
Video transcript
Common Naming: Amines Example 1
Video transcript
Here we're told to write a name for the following amine. Alright. So we're going to do that by employing these three steps. Step 1 says to identify the alkyl groups connected to the nitrogen atom. Step 2 says to name the alkyl groups alphabetically as substitutes. If there are identical alkyl groups, use the numerical prefixes of di or tri. And then step 3, we end the name of the compound with "amine". When we're writing out the name, we write the name without dashes or spaces. So here if we take a look, this is a 3 carbon alkyl group. The bond is on the middle carbon, so this represents isopropyl. And here we name the, we add to the end of the name, "amine." So all one word, isopropylamine. This will be the name of this particular amine.
Draw structure for tert-butylamine.
Write a name for the following amine.
tert-butylpropylamine
sec-butylpropylamine
tert-butylipropylamine
sec-butylisopropylamine
Name the following compound.
trimethylamine
3,3,3-ethylamine
tetramethylamine
triethylamine
IUPAC Naming: Primary Amines Concept 2
Video transcript
So here we're going to use the IUPAC naming system for primary amines. Now the carbon chain here is named as an alkane, but here we're going to change the ending of the alkane name from 'e' to 'amine'. And we're going to use numbers to indicate the location of the nitrogen. If we look at this structure here, we have to write the systematic name for the following amine. So this would be carbon 1, 2, 3, 4, 5, and 6. Six carbons is hexane, but remember it's an amine, not just a simple alkane anymore, so the 'e' gets dropped out. It becomes hexanamine, and then we have to locate where the nitrogen is located, which is found on carbon number 1. So we'd say that this is 1-hexanamine. This would be the name of this particular primary amine.
IUPAC Naming: Symmetrical vs Asymmetrical Amines Concept 3
Video transcript
In this video, we're going to take a look at how we name symmetrical versus asymmetrical amines. Now, here we're going to say that secondary and tertiary amines can be symmetrical or asymmetrical. By symmetrical, we mean that all alkyl groups are identical. For asymmetrical, that means at least one alkyl group is different. If we take a look here, it says provide a systematic name for the following amine. Well, this structure is asymmetrical because my two alkyl groups are not the same. So step 0, if symmetrical, follow steps in common naming. Well, here it's not symmetrical, so we can ignore step 0.
Step 1, we're going to say if asymmetrical, we're going to identify the largest carbon chain connected to nitrogen and name it as an amine. Here we're going to use numerical location to indicate the location of nitrogen. So the larger chain is this one, so we're going to number it from the end closest to the nitrogen. So 1,2,3. Three carbons is propane, but we drop the 'e' ending to amine, so it becomes propanamine. Then we're going to say here that the nitrogen is connected to carbon number 1, so this would be 1-propanamine.
Now go to step 2. Name other alkyl groups alphabetically as N-substituents. If they are identical alkyl groups, use the numerical prefix di. Well, here, this one is 1, 2 carbons. It's an ethyl. It's attached to the nitrogen, so it's an N-ethyl. So this would be N-ethyl-1-propanamine.
Now step 3, this is stuff we've known from long ago in terms of naming different types of organic molecules. So here we'd use, to separate numbers, we'd use commas. And to separate letters from numbers, we'd use dashes. Letters are not separated from letters. All right. So again, step 3 is something we've been doing consistently when it comes to naming under the IUPAC naming system, so that’s why it's kind of grayed out in this box. It's something that you should always have in the back of your mind in terms of naming. But for this particular amine, it's N-ethyl-1-propanamine as the name.
Provide an IUPAC name for the following.
tripropylamine
N-tripropylamine
tripropyl amine
N-tripropyl amine
Name molecule using IUPAC naming system.
N-isopropyl-N-benzene amine
N-isopropylbenzene amine
N-propylaniline
N-isopropylbenzenamine
Provide a systematic name for following molecule.
isobutylmethylpentylamine
N-isobutyl-N-methyl-2-pentanamine
isobutylmethylpentyl amine
N-isobutyl-N-methylpentanamine
Provide a systematic name for following molecule.
2-methyl-3-hexyl-1-propanamine
3-isopropyl-N-propyl-3-butanamine
N-methyl-N-propyl-3-hexanamine
2-methyl-N-propyl-3-hexanamine
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