Naming Ketones

Hey, guys, let's learn how to name key tones. So, guys, key tones are going to modify the route name of a carbon chain. You're gonna take out the e ending of the carbon chain, and I'm going to replace it with the Suffolk six own. Okay, now I know that looks like one. Please do not say one is pronounced own like ketone. All right, now, guys, in this video, we're not going to discuss the prioritization of all functional groups in terms of numbering locations. But just suffice it to say that ketones are gonna have prior priority. Then pretty much all the groups you learned in or go one including alcohol. So if you saw on alcohol and the ketone next to each other and you have to figure out which one gets the higher priority with naming and numbering, you pick the Keto. Okay, Um, now, when you're assigning common names to ketones guys, so there's AIPAC name and there's common names. Well, when you're assigning common names to key tones, then you're gonna name the both of the are groups alphabetically, and you're gonna end with the word key tone. So let me just show you a really quick example of the difference between common and AIPAC. So let's say you have a four carbon chain with a carbon Neil in the middle. Oh, gosh. You can't see that. Sorry about that. When you move it down a little bit much better. Okay, so in I a pack, the name of this would be Well, it starts off as a butane. Now, it's gonna be a beauty known, and you have to name the location because I need to know exactly where that ketone is. It could be anywhere. So I'm gonna name this as a to butin. Um, all right. Now, in terms of common naming, so I'd be AIPAC, right? In terms of common naming, it would be a little different for the common name. You would just name the substitue INTs in alphabetical order and end with the word ketone. So then it would be, um Ethel metal ketone. Okay. Almost like it's an ether. Remember that ethers. You could do that as well. You can name both of the substitutions and then name end with ether, so this would be an ethyl methyl ketone. Now, this common naming system is actually pretty common with a lot of key tones that you'll find in the lab. Because in the lab we work with a lot of smaller key tones. Okay, But once he gets a larger, more complex key tones that have bigger branching groups, the common naming system just becomes impossible to use because now you're gonna have to name the's huge, bulky substitue INTs in common names, and it just gets terrible. So you should use AIPAC. Definitely use AIPAC for more complex key tones. And it's okay to use common names for the easier to name ones. The smaller keytones. OK, so you guys were gonna do two examples. I know you guys got this. Let's start off with the first one. Obviously, I don't need the common name for this. I just want the AIPAC name, so go for it.

All right. So what was the longest carbon chain? Well, it turns out that one was a little bit tricky to answer here because we had two of equal length. We had the blue carbon chain that I believe it's six carbons long, and we had the yellow carbon chain, which is also six carbons long. Which one did you pick? Does it matter? Hell, yeah, it matters. Guys, this goes back to our al que nomenclature rules from organic chemistry one. And you just need to know that you're going to go when you have a tie. You're gonna go with one that gives the most substantial wins, meaning that if you look at yellow, yellow would only give me one branch. One sub situ int blue would give me two branches, right? Two things coming off. The theory behind this is that the more branches you have, the easier they're gonna be the to name because they're smaller. So it's easier to name something small or a lot of small things than it is to name one big, terrible thing. So we have the longest carbon chain. It's gonna be this guy right here, which means that I have a two, but you owe not Butte. Sorry, Hex. Unknown to hex unknown. Because I'm gonna give my priority to the key tone. And I just need to need my substitue int. So I have a three pro. Paul and I have a four metal. So all in alphabetical order, it's gonna be four. Metal three pro poll to Jackson. Own easy. Okay, Awesome. So let's move on to the next example.

Alright, guys. So this one wasn't so bad either. We've got a route carbon ring of a cyclo hep dean. And we just have to figure out where the substitutes go and stuff like that. So obviously my first carbon is gonna be the key tone. Okay, Ketones have priority over pretty much most groups. Um, but especially alcohol highlights and al canes which don't have any priority at all. So now we just have to determine which direction do we number in. Do we number in the red clockwise direction or the blue counterclockwise direction? The answer is red because we're just trying to make the substitutes have the lowest numbers possible. None of them have priority. So this turned into a two iota. And this is a 345 metal. So now obviously are cyclo. Hep Dane becomes cyclo helped unknown. Okay, so we can go ahead and put this all together, and it would be I come before m so too. I Oto five metal one cyclo helped unknown. Alright, guys. And just, you know, an extra side note here if you wanted to not include that one and just leave it as no location that would also be valid. And the reason is because we only have one modifying, functional group Notice that you only have one modifier. Okay, since you only have one modifier, it's OK, Thio, leave it off as as nothing there. No location because you assume that it's at the first. Now you absolutely have to put locations if you have two or more modifier. So if this became like a cyclo hep in own now you need the locations. Okay, I just like to add locations just to be explicit and both of them would be correct. So if you put a one, it's correct. If you didn't put a one, it's also find it would just be the method and the cycle. Hooked, unknown together with no hyphens and no dashes and no comments. Awesome guys. So pretty easy stuff. Let's move on to the next topic