Thank you so much for these videos!!They have led me from hating organic chem to actually enjoying it , due to your easy understandable teaching methods.
You are amazingly good at teaching. I have been gobbling up these OChen videos faster I can say OChem. Then I saw your Physics videos, man , am I lucky taking both these classes and getting help from best teacher on these subjects. Thank you so much for these videos. You are on another level when it comes to delivering these complex topics. Thank you again!
Thank you for the amazing teaching content. However, one of the structures of 1,2,3,4-butanetetrol you have drawn on the board is a meso compound, and meso compounds are achiral, but diastereomers are chiral compounds. So how do these two structures have a diastereomeric relationship? If I am wrong, please, correct it. Thank you very much.
Is there a quick trick on the exam to determine which type they are? For example, when you said if you have one chiral center, you will be considered chiral automatically. I have my final this upcoming Wednesday and I'm watching your videos for a refresher on this semester's material. Thank you.
@@ChadsPrep Thank you. I have watched all your videos on everything. I feel like I still don’t understand newman projections that well. Like I don’t understand how you place which atom where on the skeletal structure. But that’s all . Everything else I feel good about and I hope that I do well this Wednesday.
This is so helpful! I was confused about diastereomers before and this cleared it up for me! I may be overthinking this, but if mirror images of an achiral compound are, by definition, superimposable... then wouldn't they just be identical? What's the difference between 2 superimposable mirror images of an achiral compound and 2 different drawings of the exact same compound? Or maybe achiral compounds' mirror images ARE identical compounds? Am I close? ;-)
the methyl group is attached to the third carbon on the carbon chain in both molecules so both molecules are bonded the same way. There was a bond rotation about the third carbon in the second molecule which is why it looks like it's pointing up in one and down in the other but both are still identical molecules. They are conformers of each other.
do planes of symmetry not matter on fischer projections? asking for example 5, compound on the left has a plane of symmetry but considering we altered it I dont think it matters, but just checking
It was indeed. But that doesn't change the determination that the two structures are related as diastereomers. A meso compound cannot have an enantiomer by definition (since it is achiral), but it absolutely can have a diastereomer. Hope this helps!
Thank you so much for these videos!!They have led me from hating organic chem to actually enjoying it , due to your easy understandable teaching methods.
That's great to hear, Sabina Maria - glad you found the channel!
You are amazingly good at teaching. I have been gobbling up these OChen videos faster I can say OChem. Then I saw your Physics videos, man , am I lucky taking both these classes and getting help from best teacher on these subjects. Thank you so much for these videos. You are on another level when it comes to delivering these complex topics. Thank you again!
Thanks for the awesome feedback and we are happy you are here with us!
Thank you for the amazing teaching content. However, one of the structures of 1,2,3,4-butanetetrol you have drawn on the board is a meso compound, and meso compounds are achiral, but diastereomers are chiral compounds. So how do these two structures have a diastereomeric relationship? If I am wrong, please, correct it. Thank you very much.
baaaack at it again w the percentage boost in ochem, thank you again chad!!! wouldnt make it without u
Welcome baaaack and Haaaaappy Studying!
Is there a quick trick on the exam to determine which type they are? For example, when you said if you have one chiral center, you will be considered chiral automatically. I have my final this upcoming Wednesday and I'm watching your videos for a refresher on this semester's material. Thank you.
Unfortunately this is the quickest and clearest trick we have for this type of problem! Are you struggling with anything in particular?
@@ChadsPrep Thank you. I have watched all your videos on everything. I feel like I still don’t understand newman projections that well. Like I don’t understand how you place which atom where on the skeletal structure. But that’s all . Everything else I feel good about and I hope that I do well this Wednesday.
This is so helpful! I was confused about diastereomers before and this cleared it up for me!
I may be overthinking this, but if mirror images of an achiral compound are, by definition, superimposable... then wouldn't they just be identical? What's the difference between 2 superimposable mirror images of an achiral compound and 2 different drawings of the exact same compound? Or maybe achiral compounds' mirror images ARE identical compounds? Am I close? ;-)
Can you please explain what the line on top of Ch3's is? I haven't seen it before anywhere
thanks for explaining this
You are welcome, genesis - thanks for commenting!
how were the first ones not constitutional isomers? dont they have different bond connectivity?
I was wndering the same thing
the methyl group is attached to the third carbon on the carbon chain in both molecules so both molecules are bonded the same way. There was a bond rotation about the third carbon in the second molecule which is why it looks like it's pointing up in one and down in the other but both are still identical molecules. They are conformers of each other.
do planes of symmetry not matter on fischer projections? asking for example 5, compound on the left has a plane of symmetry but considering we altered it I dont think it matters, but just checking
sorry but in the last example, Wasn't one of them meso? the left one ?
It was indeed. But that doesn't change the determination that the two structures are related as diastereomers. A meso compound cannot have an enantiomer by definition (since it is achiral), but it absolutely can have a diastereomer. Hope this helps!
Wow! That was a great explanation!! The basics of conformation and configuration made super easy!! Thanks a lot
Glad it was helpful!