Hey, guys. So in this video, I want to review the general reactions that ASIO acidic Esther's Congar Oh through. So, guys, this is like your cheat sheet for all the different reactions that you could do with a CDO acidic Esther synthesis. And the first step for all of these guys is always gonna be deep throat Nation formation of an equally right and that Italy is gonna selectively form right here because that's the easiest proton to pull off. Remember, it's the most acidic. Okay, so I'm just gonna go one by one down these reactions. So once you have your easily if you react that emulate within Al Kyohei lied, you're gonna get and calculation. Okay, guys. And that just makes sense. We've done that plenty. Okay, Now it turns out that usually you're gonna have to hydrogen on this on this middle. Carbon on this methylene carbon, usually most aceto acidic. Esther's start off with not just one hydrogen, but to Okay, So if you wanted to after you get the first calculation on, you could dip protein, ate the other one with another equivalent of base and then react with another. Al Kyohei lied so that way. By reacting twice, you would remove both of these hydrogen in, like, one after the other. And you would actually get now to our groups attached to the Alfa Carbon. So this would be die alg elation. Okay, now, just keep in mind to do a die alc elation. You need to react with the base twice in order to get both protons off. And it can't be two columns of base at the same time. It needs to be based, then alcohol. Hey, lied, then base again, then alcohol. Hey, Light again. Okay, Perfect. And then finally, the last two steps I'm skipping in all of these. So just you guys know I'm always assuming that at the end of this reaction, I'm gonna do what? Two reactions? Okay, I'm always assuming that I'm gonna do, plus h +30 plus and plus heat. Why am I assuming that? Why did I not draw it? Well, guys, I mean, I guess I could have drawn it, but it happens every single time. So it's a waste of space when I'm trying to show you is the stuff that changes the stuff that stays the same that that you always hydrolyzed and you always dick our box late. That's gonna hold true for all of these. Okay, so next what if you use instead of using, Um Ah. Hey, Light or an alcoholic? What if you use a terminal alcohol diet? Hey, lied. Okay, well, then, what you can do is you can actually cyclo Alcon eight. No alcohol A I'm sorry. Alka leads. Okay, you can cyclo Alka late because what you can do is you can react with your base, react with one side of your alcohol. Hey, lied. Then react another equivalent of base, then wrecked the other side of your alcohol. Hey, lied. That's gonna form a ring around the Alfa Carbon. And you're gonna get a ring with a size of n plus one where N is equal to the number of carbons in between in your chain. Okay, so if you reacted with a three carbon die Hey, lied. You're gonna get a four carbon chain. Why? Because these are the three carbons. One, 23 And this is the Alfa Carbon that you started with. So it's a four member ring. But only three of those new carbons came from the diet. He lied. And finally, guys, this one's easy a solution. So you know that you could attack here, kick out the C l and you would get a social group after you do your you know, your age throw plus and your heat. So, guys, I know this is a lot to, like, Go over. The only way you're gonna learn is just to, like, start applying it. So let's do this practice problem. I noticed it's five steps. So you're going to figure out what's going on? So try to do this five step mechanism. I mean, this five step product. Don't worry about mechanisms. Just worry about the product, and then I'll help out. Okay, By the way, I don't want anyone to get stuck on molecule to, so I'm gonna give it to you. Okay. Notice that it says B r ch two ch 220 What is that? So, guys, that's an ether. Let me draw it for you. That would look like this. Oh, in the middle, with these two groups coming off of both sides, so it be ch two ch two br ch two ch two br Okay. Excellent. So now you have no excuse to get this wrong because I'm actually giving it to you. Okay? So go ahead and try to do it yourself, and then I'll step in and show you how it's done.