Directing Groups--Exploring Ortho/Para and Meta Directors
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- Опубліковано 8 лют 2019
- joechem.io/videos/28 for video on jOeCHEM and attached worksheet + solution (below video on jOeCHEM aka the link)
Worksheet: worksheets.joechem.io/workshee...
Worksheet Solution: worksheets.joechem.io/workshee...
Worksheet Solution Walkthrough: joechem.io/videos/wksht-soln-...
Study Guide: (To be created, but Joe's working on it!)
In this video, we look at directing groups and how substituents off of benzene rings can direct newly added groups ortho/para or meta.
In the next video (joechem.io/videos/192), we'll discuss how groups can activate/deactivate benzene rings for subsequent EAS reactions either through resonance or induction.
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This is the best video I have found in the topic so far. Many thanks for your hardwork!
Great thank you 🙂
Just one word
AMAZING 😍
Two words: THANK YOU (for watching, so more than two).
Make sure to check out my website jOeCHEM.io for more videos and worksheets + solutions!
And if you would subscribe to my channel I’d massively appreciate it!
Thank u omg
thank u bro ✌
Glad you found it helpful! Make sure to check out my website for other videos and the guided practice/answers that go with each one : ) joechem.io
Senin gözünün yağını yiyim ellerine ağzına diline sağlık dostum
Hi your explanation is very good. i have a question, why is Br, Cl and NO2 +ve charged?
Hi, Jing Hui Wong!
I’m a bit confused about your question: Br and Cl are NOT positively charged (unless you draw resonance where a lone pair from Br or Cl is brought into the benzene ring.
NO2 on the other hand has a positive charge, specifically on the nitrogen. If you expand the nitro (NO2) group, as seen at 8:30, you’ll see that the formal charge of the N is a +1 (nitrogen has 5 valence electrons but is in control of 4).
Did that help clarify anything? Or, if not, what is still causing confusion?
Thanks for watching by the way!
Damn I'm really learning O-Chem from a frat boy.
This was one of my earrrrly videos, and I HATE that I'm wearing a shirt like this (plz forgive me, thanks for watching & being a jOeCHEMist).
Make sure to check out my website for all my videos, plus worksheets + written solutions + PLUS video walkthroughs of me doing the solutions ALL FOR FREE
My professor mentioned that halogens can be weak EWGs through the inductive effect, but they are still ortho/para directors. Do halogens usually activate or deactivate benzene rings?
Hey Ana! First off, thanks for watching.
So (and I should have included this in the video), halogens are EDGs (which, via resonance, explains why they direct ortho/para), BUT due to their electronegativities, they do ultimately take electrons out of benzene rings. As a result, they make the ring LESS negative, therefore SLIGHTLY deactivating rings (because they do put electrons in the ring via resonance, they're just not stoked doing it).
Does that make sense?
@@jOeCHEM Yeah definitely! Thanks for the quick response :)
@@anarose6021 Great! Also, make sure to check out my actual website joechem.io (I have worksheets + solutions linked to each video, for free), and if you'd subscribe to the channel I'd really appreciate :)
hey gangie I didn't know your explanations were this 𝓕𝓻𝓮𝓪𝓴𝔂 𝓿𝓻𝓸❤