The tricks for remembering or understand things that you present makes these videos invaluable for learning organic chemistry. Like the close parable. Brilliant.
@Leah4sci Жыл бұрын
Glad you liked it, I try anything I can to make things memorable and understandable. Thanks for watching!
@emmanuelletoussaint2872 жыл бұрын
One of the topics for my quiz tomorrow is Diels-Alder rxns and this video was definitely very helpful! Thank you for all that you do!
@Leah4sci2 жыл бұрын
Glad this came at a perfect time! hope you aced your quiz
@shanemichael94042 жыл бұрын
I am going to be tutoring a college student who is young and bright and she's sure to be a success in the near future. I find your videos refreshing as I brush up on my orgo. chem. I also told her about your entire you tube collection of videos which if she studies carefully, she won't even need tutoring. Chemistry might be one of my favorite subjects, but not for others, that's for sure. I didn't want to reach out to you on messenger, (as it has been a few years since I have) because I figured you're probably too busy and that's a little on the personal side anyway. I'm the guy who was studying just to learn more, but for no other reason. I had no deadlines to meet. I Hope this message finds you doing well. Thanks again !
@Leah4sci Жыл бұрын
Hi! Great to hear from you and excited to hear that you are finding a way to let your passion for chemistry help others. Thanks for passing my information along to your student, thank you!
@jayc68946 ай бұрын
your memory devices are really helpful: make-break-make, the endo/enter and exo/exit, and the rest are great
@Leah4sci6 ай бұрын
So happy to hear that this resonated with you. There's time for overthinking on other problems but something like this should be straight-forward if it can be. Hope it helps
@Sijo2 Жыл бұрын
Your amazing!!! Every video watch, you make chemistry so easy to under stand. Thank you
@Leah4sci Жыл бұрын
Wow, you're very welcome! I appreciate the compliments. :)
@hej-ky4qk2 ай бұрын
thank you, you helped me a lot :)
@Leah4sciАй бұрын
You are welcome!
@user-hl1hr2po6n2 жыл бұрын
than k you for your help! its even more helpful than my classes !
@Leah4sci2 жыл бұрын
Happy to help!
@saaniyahsajed19322 жыл бұрын
you're the best. thank you so much for explaining these so well!
@Leah4sci2 жыл бұрын
Aww you're so kind, and you're welcome!
@pimpjuiceT2 жыл бұрын
concise and very clearly explained, thank you!
@Leah4sci2 жыл бұрын
You're very welcome! That was my goal, I'm so glad you found it helpful!!
@naeemoxychem Жыл бұрын
Thanks for such a niche representation with tricks
@Leah4sci Жыл бұрын
you're so welcome
@meethiaasali7925 ай бұрын
thank you leah, you are a life saver
@Leah4sci5 ай бұрын
You're very welcome
@GodOnVayne2 жыл бұрын
Thank you Leah! This helped me a lot.
@Leah4sci2 жыл бұрын
You're so welcome!
@japvir36944 ай бұрын
Very usefull for jee exam
@Leah4sci3 ай бұрын
Happy to help!
@usernamehere942 жыл бұрын
Great video, thank you so much for sharing!
@Leah4sci2 жыл бұрын
You're very welcome!
@yusefsadik86532 жыл бұрын
The Diels Alder reaction is so satisfactory, specially when you get cyclohexenes
@Leah4sci2 жыл бұрын
yes!
@arjunsinha40152 жыл бұрын
Great Video
@Leah4sci2 жыл бұрын
Thank you!
@A-Ls12 жыл бұрын
Okay I see it’s straight up and down
@Leah4sci2 жыл бұрын
Good deal!
@patrycjapajdak24917 ай бұрын
a very useful video, thank you :))
@Leah4sci6 ай бұрын
Glad you liked it!
@nate23762 жыл бұрын
For the part at 2:40, I thought it does not matter if it’s in or out but more so if facing the same way or different directions they are cis or trans respectively
@Leah4sci2 жыл бұрын
You're correct. The inside and outside groups must end up with the correct relationship to each other, regardless of whether they are facing you (the observer) or not. But also bear in mind that they must be appropriately positioned in relation to any groups that the dienophile might have.
@kewang4683 Жыл бұрын
Great video ! You should be my college professor!
@Leah4sci Жыл бұрын
Thanks! But if I was, I wouldn’t be able to help as many students as I do on my website and KZfaq.
@NewWesternFront Жыл бұрын
So you get enantiomers when all the chiral centers on a molecule are inverted in their absolute configuration. And we can see that those two structures become diastereomeric because that methyl configuration is retained. This is how I think to explain your “challenge”. I was having a little trouble finding a simpler answer in a plane/mirror of symmetry. What do you say?
@Leah4sci Жыл бұрын
That's the exact explanation I would give! The addition of a chiral center whose configuration is retained in both structures (while the other centers change) gives us diastereomers.
@nate23762 жыл бұрын
How do you choose endo/exo when the dienophile is trans
@Leah4sci2 жыл бұрын
you get both
@andreifabre1581 Жыл бұрын
I believe all of this reactions are when the dienophile attacks from the bottom, but when it attach from the top does every thing is inverse?
@Leah4sci Жыл бұрын
Both endo and exo products can be formed, based on the stereochemistry of the specific reaction. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
@ZeinabYusuf Жыл бұрын
mmm girl you ate this up
@Leah4sci Жыл бұрын
Thanks, I appreciate the compliment!
@9247173757Ай бұрын
Excellent teachings
@Leah4sciАй бұрын
Thank you!
@marcusp.75122 жыл бұрын
thank you!
@Leah4sci2 жыл бұрын
You're welcome!
@amine_Raf Жыл бұрын
Great explanation, but how about facial approaches, I always find that most Diels-Alder courses don't discuss their effect on stereochemistry despite their importance in organic synthesis involving DA reactions. How would you say the facial approach of a dienophile affects the stereochemistry and the number of theoretically possible stereoisomers?
@Leah4sci Жыл бұрын
I'm not sure I understand your question, do you mean the products when approached from the top and bottom respectively?
@amine_Raf Жыл бұрын
@@Leah4sci Yes, That's what I mean. Wouldn't the approach from the bottom result in a product with a different stereochemistry than the product of the approach from the top?
@MOHAMMADMURSALEEN-eq6ir Жыл бұрын
you are the best
@Leah4sci Жыл бұрын
Thank you so much :)
@man-yinleung89902 жыл бұрын
When the dienophile is cis, the exo and endo products are meso compound isn't it ?
@Leah4sci2 жыл бұрын
Great question! Yes, you are correct. For help with more like this, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
@MdFaisal-ol3jv2 жыл бұрын
Knoevenagel condensation reaction please.
@Leah4sci2 жыл бұрын
I've never heard of that reaction
@Leah4sci2 жыл бұрын
Thank you. Sounds like you know the reaction now, so all good?
@saravalencia68572 жыл бұрын
Hi Leah, in the beginning of the video you quickly run by some of the previous videos. However, in 0:12 , there is an example shown where the dienophile has 3 oxygens attached, one in the middle, and the other two attached on either sides via a double bond. I tried looking for this example in the two previous videos but can't locate it, so I was wondering if you made another video that includes this problem.
@Leah4sci2 жыл бұрын
Thank you for pointing this out! I skimmed the previous two videos as well, and you're correct. It's not found in either of those videos. It's possible that particular image was pulled from one of my longer Study Hall videos, which you can access if you join the Organic Chemistry Study Hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/