It is on my to do list for the summer. I will see if it is at all feasible to bump up that schedule. While I don't have them on YT, you can find an old, partial set of them here though as well: www.chadsprep.com/chads-elementary-biochemistry-videos/ Hope this helps!
Hi Ryan! That is what Dr. Gould required of his students for proton-transfer arrow-pushing. I never got a reason, but as most of the students I was helping were his, I got into the habit over the course of 15 years. While I haven't seen any other professors or texts present it this way, I'll still side with Dr. Gould. His knowledge far exceeds my own, and in several places in the curriculum he would require students to have a more exact knowledge of the subject than some of the over-simplifications that are commonly taught. I didn't find an answer with a quick search, but I'll dig a little deeper and let you know what I find out. :) Great to hear from you! Are you now teaching ochem too?
@@ChadsPrep Yes I have been teaching OChem at BASIS since 2018. I was just catching up on stuff after Chapter/Unit 9 since I am tutoring in OChem too here and there and I am trying to develop my OChem course to include stuff beyond alkene reactions. I have an idea on the arrow: perhaps the arrow head is pointing to the space where the new bond forms, kind of like how we do the two fishhook arrows in radical mechanisms, we have the two fishhook arrow heads reaching out to each other.
I, too, believe that is the point, but drawing it this way is unique to proton transfer as compared to nucleophilic attack. For nucleophilic attack arrows are still drawn to the atom rather than next to them. I still don't have a reason for the distinction. I might just bite the bullet and send Dr. Gould an email :)
question! for the mechanism, if you didnt have the end product already there, how did you know to use three NH2? does excess always mean three? how do you define what "excess" means in a mechanism so you would know when you have used it all up in the reaction? how did you know that you hadnt used it all up even when you reached the alkyne that was predicted? sorry i know thats a lot i just hope i'm making sense haha. I guess that is my biggest gripe with ochem- how does one just know what needs to be done in a mechanism with the myriad of reactions out there.. thank you so much for your videos!! they are helping immensely for my dat prep:))
silly, excess means there is a lot of NH2 and it's lazy attitude to say "uncountable" so in a reaction you can use as much NH2 as you wish until the final product is formed
Please make Biochemistry videos!!!! I start biochemistry next semester after dropping this past semester. I need help!
It is on my to do list for the summer. I will see if it is at all feasible to bump up that schedule. While I don't have them on YT, you can find an old, partial set of them here though as well: www.chadsprep.com/chads-elementary-biochemistry-videos/
Hope this helps!
For some reason I can't stop smiling at the thought of twin bromines and neighbor bromines. Just sounds super cute.
You could name your children after the halogens...😉
hi, my professor is requiring us to know zipper reactions, would you be able to make a video on that? Thank you
^ yes, please! thank you!
I learn alkyne's of things from Chaddy daddy!
:)
I am curious why do you draw the deprotonation mechanism arrows pointing to just the side of the H instead of directly to the H atom?
Hi Ryan! That is what Dr. Gould required of his students for proton-transfer arrow-pushing. I never got a reason, but as most of the students I was helping were his, I got into the habit over the course of 15 years. While I haven't seen any other professors or texts present it this way, I'll still side with Dr. Gould. His knowledge far exceeds my own, and in several places in the curriculum he would require students to have a more exact knowledge of the subject than some of the over-simplifications that are commonly taught. I didn't find an answer with a quick search, but I'll dig a little deeper and let you know what I find out. :)
Great to hear from you! Are you now teaching ochem too?
@@ChadsPrep Yes I have been teaching OChem at BASIS since 2018. I was just catching up on stuff after Chapter/Unit 9 since I am tutoring in OChem too here and there and I am trying to develop my OChem course to include stuff beyond alkene reactions. I have an idea on the arrow: perhaps the arrow head is pointing to the space where the new bond forms, kind of like how we do the two fishhook arrows in radical mechanisms, we have the two fishhook arrow heads reaching out to each other.
I, too, believe that is the point, but drawing it this way is unique to proton transfer as compared to nucleophilic attack. For nucleophilic attack arrows are still drawn to the atom rather than next to them. I still don't have a reason for the distinction. I might just bite the bullet and send Dr. Gould an email :)
So would visceral have the same mechanism ?
Hey Carolo! Which point in the video are you asking about?
Hi, does this mean 3 equiv of NaNH2 is needed for synthesis of Alkynes?
Just 2 equivalents are needed - the first forms the alkene and the second the alkyne :)
question! for the mechanism, if you didnt have the end product already there, how did you know to use three NH2? does excess always mean three? how do you define what "excess" means in a mechanism so you would know when you have used it all up in the reaction? how did you know that you hadnt used it all up even when you reached the alkyne that was predicted? sorry i know thats a lot i just hope i'm making sense haha. I guess that is my biggest gripe with ochem- how does one just know what needs to be done in a mechanism with the myriad of reactions out there.. thank you so much for your videos!! they are helping immensely for my dat prep:))
silly, excess means there is a lot of NH2 and it's lazy attitude to say "uncountable" so in a reaction you can use as much NH2 as you wish until the final product is formed