 OK, so let's talk about this keto enol tautomerization. So whenever you've got a ketone within a solvent that has a heteroatom with a lone pair of electrons, like water, so a basic heteroatom essentially, right? If you've got something like this, of course, what you can look at is if you look at your PKA table, you'll see that this alpha proton, so we call this, since that's the ketone, that's alpha to the ketone, right? So this is alpha proton. I don't have the PKA table, but I think it's about 25, OK? So that's the PKA at that. And what will happen is not to any appreciable extent, so it'll be more like this. In fact, it'll be even less than that. What'll happen, though, is because of the acidity of that proton, water, or whatever the base is, whatever that solvent may be, will deprotonate it and make what we call the enol, OK? Which is actually a two-step reaction, OK? So that's the first step. And then, of course, since you've got the hydronium ion very acidic, that's going to deprotonate there. When you do that, you get what's called the enol. If you can see, so this is called an enol. Of course, this is the ketone. So this is called ketoenol-automomorization. Again, since this is not very acidic and this is not very basic, this is not going to go to any appreciable extent. But it does affect the reactivity. So what you can do is you can kind of force ketones and aldehydes into their enol form. And what will happen is that eventually what you can do is make this carbon here to be a nucleophilic carbon. Because if you think about the resonance structure of this molecule, so the resonance structure of an enol, if we pull these electrons down like that, and those electrons there like that, that gives you, of course, this resonance structure isn't the main resonance structure. But it does show reactivity like this. In fact, this is a very good way of what will show eventually is to make carbon-carbon bonds this way. But you can see, right, you've got a carbenion on there. And that's a good, that's almost like a Grignard reagent if you think about that. So that's kind of like a carbenion on there already now. Good to make carbon-carbon bonds. Carbon carbons or carbon heteroatom? Carbon carbon bonds, yeah. You said that you can push it that way. How do you push it to the enol formation? So there'll be reagents that we'll talk about later. There'll be reagents that we talk about later. But right now, let's just focus on this ketoenol tautomerization. Just for right now, let's pretend that we're not putting any of those reagents in, which we're not, right? So it's just in the water solution here. And this happens to some extent, but not very appreciable. And the main thing is that it shows this reactivity with this being a kind of carbenion. But again, like I said, we're gonna have to kind of stick it in that way, okay? We'll use like end-butyl lithium or things like that. It will be reagents that we'll use that'll push it that way, okay? Or potassium permanganate? No, okay.