At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
idk u explain lol ♥
While I prepare, try to draw the mechanism of the reaction of aniline with AlCl3 and Cl2. I'm going to take a while to explain the mechanism behind the reaction so that you can work it out. I think being able to work out organic chemistry problems kind of like math problems is the best way. If this doesn't make sense, hopefully it will very soon!
You have two options. We can do the full mechanism for this reaction or we can simplify it so that we assume that AlCl3 and Cl2 really just puts Cl+ into solution for the aromatic ring to act as an electrophile.
AlCl3 +Cl2 --> im kinda confused
ohhh we put them into benzene ring?
oh ok i didn't know whats aniline
Wait, I'm sorry I just realized that I made this reaction up on the spot, and doing the exact reaction I describe will fail. Aniline is the common name for aminobenzene.
Alright, now the problem with adding chlorine through using AlCl3 and Cl2 is that we'll instead make a salt that interacts with the lone electron pair on the nitrogen. So we're going to have to pick something else. In general what you might want to do is reduce a nitro group to an amine group. Which you can use metal and an acid. So instead lets start out with something else, I feel like I've needlessly confused you haha we'll do a better example. Nitrobenzene will be our starting compound and we'll react it with AlCl3 and Cl2 to add.
AlCl3 and Cl2 this reaction would be substitution right?
Yes, although it's not exactly a normal substitution as we'll see. It's not quite SN2 or SN1, instead we call it "Electrophilic aromatic substitution" and this is the subject of the lesson today. How does this substitution happen?
hmmm electrophilic that would mean electron wanting
so that means something that we are going to add has to want an electron and the benzene ring has to have that electron to donate
|dw:1403635189768:dw| Yep exactly. To test your knowledge, finish drawing the formal charges and bonds and electron pairs on the nitro group of nitrobenzene.
it looks like dative bonding
Nope, chlorine will only end up on the right side, I just mean draw the structure of nitrobenzene with charges and bonds shown. Chlorine will add to the meta position since nitro is a meta director right?
i remember NH2 and carboxylic group being meta director alright so nitro is also meta director
NH2 is an ortho/para director, carboxylic acid is a meta director though.
Here, let's start over I put too much information and now I think it's confusing you. Let's close this and start fresh.
eeeehh ok gimme a sec to refresh my memory