Choosing Between SN1 SN2 E1 E2 Reactions
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- Опубликовано: 5 ноя 2023
- Leah4sci.com/SNE presents: Choosing between SN1 SN2 E1 E2 reactions using a SIMPLE checklist rather than a confusing flowchart. This video shows you how to analyze each of your givens to quickly rule out reactions that cannot take place making it very obvious which direction the reaction will go between Substitution and Elimination, First or Second order (1 or 2 type)
📺Watch Next: Practice SN1 SN2 E1 or E2 Mechanism • Practice SN1 SN2 E1 or...
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This video walks you through a four-part checklist that can be used to determine whether a given reaction will proceed via an SN1 SN2 E1 or E2 reaction mechanism and also which product molecules will be formed. You’ll learn how to analyze the degree of substitution of the starting reactant, the strength of the attacking nucleophile or base, the type of solvent, as well as the strength of the leaving group.
Additionally, you’ll learn about the notable exception of the big bulky base and why it forms the Hofmann product. You’ll also learn why the presence of heat in a reaction favors elimination, as explained by a reaction coordinate energy diagram. Finally, you’ll see me work through a few examples so that you can apply what you’ve learned to real test questions.
↪ Links & Resources Mentioned In This Video ↩
▸Substitution Elimination Series + Cheat Sheet Leah4sci.com/SNE
▸Four Part Checklist for SNE Reactions Leah4sci.com/Checklist
▸SNE Reaction Energy Diagrams Leah4sci.com/SNEdiagram
▸Pencil Trick for Classifying Carbon Atoms Leah4sci.com/Pencil
▸Carbocation Stability and Ranking Leah4sci.com/Carbocation
▸Zaitsev’s Rule for E1 Reactions • E1 Reaction (vid 2 of ...
▸E2 Reaction with Big Bulky Base • E2 Reaction (vid 4 of ...
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⏱ In this video:
[0:38] The Four Part Checklist
[0:55] Alkyl Halide
[3:33] Attacker
[6:12] Solvent
[8:23] Leaving Group
[10:15] Practice Problems
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Ms.leah, you dont know or understand how many students you have helped grasp organic chemistry, youre literally the OCHEM angel and we speak of you highly, youre a legend in my univeristy, thank you so so much for what you do!
Thank you so much, I am honored and humbled by your compliment.
I struggled with organic chemistry in undergrad and strive to make videos that will prevent others from having to go through what I did. I hope it's working :)
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I have graduated almost 5 years ago now, and I still watch these videos. They're so good for keeping your fundamental ochem sharp!
Oh wow that's amazing! What are you currently studying/doing that you're keeping sharp in orgo?
@@Leah4sciI'm doing EV research using super resolution microscopy, so nothing related 😂 I am just really passionate about organic chemistry, and I'm hoping to pursue a PhD in the field soon!
Oh wow that sounds really intense and quite fascinating, I hope you go to work every day excited to play with the 'fun toys'. Wishing you the best with your PhD
Im absorbing the information! Even if it's a little ahead of my current knowledge. Cant thank you enough. Your explanations and descriptions just make sense! I LOVE CHEMISTRY!!!!
You're very welcome! Chemistry is an awesome subject
I needed this. We're currently in this section, and I'm so confused. Because of you, I have an A in O Chem! ❤
Love that this came at a perfect time for you and honored to be a part of your journey! YES to getting an A!
this was so incredibly useful, your videos are carrying me and all my friends through orgo right now. thank you so so so so much! wish you were my teacher :')
So glad I can help! If you need help as you close in on your finals reach out to me at leah4sci.com/contact for more resources.
I love your videos so much you are such a blessing, it helps me so much in my learning process ! I always watch your videos
I'm so glad to hear that! And thanks so much for your kind words.
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I'm so happy to be a help for you during such a tough time. Sending hugs.
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Glad to help
WOW!!! I have my midterm THIS THURSDAY on this, this just came out!
Glad this came at the perfect time for you! I have a full series on SN/E reactions here leah4sci.com/sne
Best of luck on your exam
Currently studying for the DAT. Perfect timing bc this was so confusing for me! Now off to learn alkene alkyne mechanisms 😂
SN/E is definitely something to understand more than memorize for the DAT. Hope this video helped and be sure to check out my alkene and alkyne playlists for your upcoming studies. I'm actually preparing to publish an alkyne video next so keep an eye on your notifications.
I have my Orgo I final tomorrow and I am currently at an 89. Shooting for an A. Wish me luck guys
So close! wishing you the best to get that A
@@Leah4sci I got an A on the Final, and an A overall! Thank you for your informative videos!
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New content :0 I don't even need Ochem anymore and imma watch
Wow, glad you're still enjoying my videos even after finishing organic chemistry
perfect timing bc i have an exam on this in an hour 😂
Oh wow, hope you had enough time to practice a few examples so you can apply it on your exam
Leah4sci > The Organic chemistry tutor
Thank you, I appreciate it! The Organic Chemistry Tutor is pretty good :)
I agree
best explanation
Glad you think so!
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Thanks
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Sure! 😁 Leah4sci.com/join
Hey, Liah!! Can u make a video on ring expansion? Thanks :)
(New sub)
Hey! Thanks for subscribing. I do have one on Ring Expansion via a hydride or methyl shift. To watch, visit my site at leah4sci.com/hydride-shift/
I’m confused
How can a tertiary carbon go with E2
When everyone say it’s not possible
I don’t understand
SN2 cannot happen with a tertiary leaving group because there is too much hindrance blocking the attack. However, if the leaving group on a tertiary carbon is not attacked directly, and the beta carbon's H is accessible, and E2 is not only possible, but quite desirable due to creating a highly substituted and therefor stable pi bond. This is in accordance with Zaitsev's rule