This is an amazing video. Orgo is just one of those classes that breaks your soul. I’m happy that I still understood 80% of what the video was teaching.
This just got suggested by RUclips, first video in this series that I have seen... Apparently I need to start at the beginning, because I understood maybe the words 'change' and 'bond', everything else was a garbled mess... lol
Great to hear from Deboki Chakravarty Again! I think not only organic chemistry, she should teach all the chemistry in and out of the science textbooks... This channels selective chemistry vids are very good.. :)
Oh, hey! Crash course is doing chemistry now. Maybe it will help me make sense of the college course I barely made it through, and... nope. Already in the fetal position.
You are absolutely correct that there are 15 carbons in the molecule. For this problem, we were focusing on carbons in the main chain (assuming the carbons on nitrogen could be added with nitrogen). Good eye! Thanks for leaving this comment so we could share our thought process.
There’s some slightly strange reasoning here. First of all, you can’t just say that when a starting material and a product both have the same absolute configuration label, you must have overall retention: CIP priority means that you can invert a stereocentre with a lower priority group to get a product with the same R or S label. Then, in the retrosynthesis, there was no real discussion of which bonds to break beyond “we’ll break these bonds because we’ve covered this chemistry.” Even if, as a chemist, you don’t know how to make a particular bond, it is your due diligence to look up the possibility of the alternative disconnection if your route is not especially concise (like the one in the video). Perhaps aldol chemistry hasn’t been covered in this series yet, but it is one of the most classical kinds of C-C disconnection, and would be equally applicable here.
![ROSÉ(로제) - APT. (Band VER.) (With. 이영지) [더 시즌즈-이영지의 레인보우] | KBS 241129 방송](http://i.ytimg.com/vi/IW8qaemx74g/mqdefault.jpg)
Oh, so this is what it feels like for Crash Course to upload exactly what you need exactly when you need it!
This is an amazing video. Orgo is just one of those classes that breaks your soul. I’m happy that I still understood 80% of what the video was teaching.
Imagine if CC didn’t exist...many students would fail their exams.
Thanks Crash Course ❤️❤️❤️
This just got suggested by RUclips, first video in this series that I have seen... Apparently I need to start at the beginning, because I understood maybe the words 'change' and 'bond', everything else was a garbled mess... lol
Always creative and excellent
Great to hear from Deboki Chakravarty Again!
I think not only organic chemistry, she should teach all the chemistry in and out of the science textbooks...
This channels selective chemistry vids are very good..
:)
7:33 It only took 34 episodes for Deboki to actually DO some chemistry! ;)
Oh, hey! Crash course is doing chemistry now. Maybe it will help me make sense of the college course I barely made it through, and... nope. Already in the fetal position.
This has how many episodes?
I took organic chemistry some years ago at a university. I don't ever remember being taught this concept.
I didn't understand anything but I Love this tutor
Came on time
4:20 actually the number of carbon atoms on the starting molecule is 15...i think tou missed the two ethyl groups on the amide group
You are absolutely correct that there are 15 carbons in the molecule. For this problem, we were focusing on carbons in the main chain (assuming the carbons on nitrogen could be added with nitrogen). Good eye! Thanks for leaving this comment so we could share our thought process.
pretty sure you guys forgot about Alan Turings existence
My brain hurts so hard during the last few minutes of the video
There’s some slightly strange reasoning here. First of all, you can’t just say that when a starting material and a product both have the same absolute configuration label, you must have overall retention: CIP priority means that you can invert a stereocentre with a lower priority group to get a product with the same R or S label. Then, in the retrosynthesis, there was no real discussion of which bonds to break beyond “we’ll break these bonds because we’ve covered this chemistry.” Even if, as a chemist, you don’t know how to make a particular bond, it is your due diligence to look up the possibility of the alternative disconnection if your route is not especially concise (like the one in the video). Perhaps aldol chemistry hasn’t been covered in this series yet, but it is one of the most classical kinds of C-C disconnection, and would be equally applicable here.
Take it back now yall
Crash Course
Hi🐼
How come PBr make a bond mam?? Is it possible to make a halide of PBr??
Phosphorus and oxygen interact with each other making the alcohol a good leaving group. The halide then attack via sn2 mechanism
Sure it is, there are phosphorus halides, with phosphorus atom on either +III or +V oxidation state.
1 hour late is a record
first