 Okay, so let's try this one if I have that kind and I use lithium and ammonia What product am I going to be getting from this one Bremen did you say? Yeah, the trans-alkene right and it's going to be a Decene So the trans-decene So the five in this case right so one Well, how do I get that product so y'all are wondering remember they're still good, so That's the reason that's the product that I get from these reagents. Let's learn the mechanism Okay, so what we're going to do is erase this Race that so now you know what the product is see that now you know where you're going So if you're trying your mechanism, don't draw to go somewhere else. Okay draw up where you're going So lithium and cell It's a rat, right? It's got that long electron Whenever there's a radical you're going to have a radical reaction. Okay. In fact what happens first is Radical and then polar it goes back and forth back and forth. Okay, so What'll happen first is you're going to do your fish go to girls like that Like that, so you can think of if you want to Your lithium so remember whenever we have those metal Organic bonds metal carbon bonds. We really want to think of them more as Carbamids, okay, so like the carbon itself has both of those electrons. Okay, so what I'm going to do is kind of erase that and Remind ourselves that we can think of them as carbamids with the lithium kind of just somewhere out Remember we added ammonia as our solvent. Okay, so ammonia's got those protons on it So if we have a strong base here, it's going to remove the proton from the money So what happens now? It's a polar error. Okay, so that was the double-headed Now we have you will lie actions you're going to have an excess of lithium so it's two moles of lithium or Every one bowl of alkene Or alkyne sorry another lithium atom and guess what this one's going to do do another radical reaction Okay, so remember what I said you're going to do radical then a polar then a radical then a polar Okay, that's how they remember this So the lithium attached there, okay, but remember that metal carbon bond we think of as an anion Find ourselves In fact, let's get this Okay, and now what's going to happen that acts as a strong base like we said before Got the polar error All our heroes And we're going to make the trans alkyne and then if you want to This is the product and just trans alkyne from an alkyne lithium in ammonia. Okay, how do you get a cis alkene from an alkyne you remember? Limler's catalyst and what? H2 yeah, you have to put the H2 in there or you won't get Okay, are there any questions on this mechanism