Stereochemistry - R S Configuration & Fischer Projections 

Organic Chemistry PDF Worksheets: www.video-tutor.net/orgo-chem.html Full-Length Exams & PDF Worksheets: www.patreon.com/MathScienceTutor/collections Direct Link to The Full Video: bit.ly/3sYktse PDF Worksheet - 38 Sub-Problems: bit.ly/3HaeWas

Ah,lets learn stereochemistry at 1 AM

My man has guided me through my general chemistry classes, my general physics classes, and now he's coming through for my organic chemistry classes. At this point I'd trust this man with my entire life xD

Despite the fact that I'm watching this video after two years of release, it still serves it's suppose. That's a rare feature of an outstanding teacher. Thank you❤❤❤

Thank you! You’ve taught me a lot more than I can learn from my instructors.

That trick at the end with the triangle and the circled number was mind-boggling haha. That makes it so much easier, thanks!

Studying for the DAT and I remember watching this video during OCHEM 1 because his way just makes so much more sense.

The world best teacher ❤

You deserve all of my professors earning bro , these ads isn’t enough to go by. How can you be so humble?

Thank you for explaining this in 13 short minutes

I'm from Pakistan, student in Germany. You have taught me what my professor was not able to do from a whole month. May God bless you! Keep up the good work.❤

thanks, sir.. i really appreciate your video.. i've been watching your vid ever since my 1st sem.. thankfully, previous semester i got an A for my chm.. wishing u a best in health

I know you probably wont read this, but I want you to know that my Organic Chemistry professor didnt even mention you could just skip over four. She overcomplicated it by making you switch configurations twice, etc...thank you so much.

really speechless to his dedication to us tysm for teaching me so much.ur concepts literally the bar I have set for all the concepts

The position of the C=C in cholesterol is wrong, according to your drawn diagram, there should be 9 chiral centers, but for cholesterol, there is only 8 because of the positioning of the C=C. But other than that, I loved the video and it helped me a lot in understanding stereochemistry.

Thanks man, for helping me finally understand this. I'm a pharmacy student and the notes the teacher gave me was just full of bullshit and couldn't understand shit. You've helped me out here. Hope you make more videos like this and help others like me.

I have trusted you with my As and A level Chem and Math classes and Uni here I am😢...you still helpful

Thanks alot professor JG

I've got a question regarding the Hydrogen Atoms in the Cholesterol Molecule. Did you follow any rules when placing the Hydrogens in between the Carbon structure regarding their position behind or in front of the planes? Or is their position arbitrary? Thank you so much for this great tutorial. It really helps!

Legend says he was and is the only man on earth who taught each individual in the last minute and still ace any exam 🐐

단순히 유기화합물은 자기 스스로의 상태 예컨대 에테인이라면 에테인의 상태로 메테인이라면 메테인의 상태로 존재하는 줄로만 알았는데 일련의 순환적 과정이 있다는 사실을 이 영상을 통해 깨닫고 깊은 감명을 받았습니다.

organic chemistry tutor always saves my day😊😊😊😊😊

For number 3, why is the carbon below the second chiral center NOT a chiral center?

Mistake: Hey Erm, i think u made a mistake in the position of the double bond in cholesterol. Thanks, and great video!

amazing

I don't know how I'm just discovering this page but, 2 minutes in and I gave you a subscribe😅

OCT has taught be AP Calc BC, honors and AP Physics, honors and now Organic chem. Absolute GOAT

life saving tip at the end of the video guys! Thanks!

The double bond drawn is in between the wrong carbon atoms. According to the drawing, there should be 9 chiral carbons but since the drawing is incorrect 8 is the correct answer for the number of chiral carbons in cholesterol.

This video made this topic easy for me thank you sir

27:19 I got (2R,3S)-3-bromo-2-chloro-1-butanol for problem 5

remember that the double bond in cholesterol should be one carbon more to the left and therefore make a sp2 carbon.

Just wondering if there are 9 chiral instead? There seem to be one more between 1st and 2nd chiral, the tertiary carbon

Isn't carbon atomic number a 6 not 12?

You made it simple bro..

super super super 👏

Thanku so much sir❤️

1:24 bruh carbon's atomic number isn't 12, it's 6

For the last problem I would say that just make Fischer then do the even exchange:)

It was very helpful!!! Thanks

Thank you sir

Im crying because I finally get it 😭

Hey did you miss a chiral carbon at 16:40? There’s a carbon to the left of the double bonded carbon that I believe is also chiral. Just curious. Someone plz lemme know

You missed a chiral center in the cholesterol molecule

Amazing video sir !

Thank you so much

Thank you very much

Thank you so much man you really made me do problems in chemistry with such nice understanding and knowledge I really used to hate doing problems but because of you it has eventually become easier ❤❤❤

For this molecule, 21:18 what if carbon 4 had another carbon attached, and that carbon was attached to let's say an OH group or something. Would you write CH2 in place of carbon 4, or CH2C or CH2CH2OH??

Goated vid

والله انك وحش

I’m having a test now and I’m jc watching this now 😂

Can we wrie 2-brom-2 methylbutane instead of 2-brombutane?

Am sorry I got confused, isn't clockwise S- configuration and counterclockwise R Configuration?

Won't #3 have 9 chiral centres... one more below ch3 bond line close to the double bond?

thank you sir.

At 16:00, why is the hydrogen wedged? I am still confused when to draw the invisible hydrogen as a wedge or dash.

You reading the comments, study!

Or do you have any video's about pie chart

ive a question about the total of cholesterol chiral carbon. how about the tertiary carbon under the second carbon that you have label. isnt it a chiral carbon? if it is, therfore the total of chiral carbon should be 9 right? hope you notice my comment

1. Alif, Lam, Ra. These are the Verses of the Wise Book. 2. Is it a wonder to the people that We inspired a man from among them: “Warn mankind, and give good news to those who believe that they are on a sound footing with their Lord”? The disbelievers said, “This is a manifest sor￾cerer.” 3. Your Lord is Allah, who created the heavens and the earth in six days, then settled over the Throne, governing all things. There is no in￾tercessor except after His permission. Such is Allah, your Lord-so serve Him. Will you not reflect? 4. To Him is your return, altogether. The promise of Allah is true. He originates crea￾tion, and then He repeats it, to reward those who believe and do good deeds with equity. As for those who disbelieve, for them is a drink of boiling water, and agonizing tor￾ment, on account of their disbelief. 5. It is He who made the sun radiant, and the moon a light, and determined phases for it- that you may know the number of years and the calculation. Allah did not create all this except with truth. He details the revelations for a people who know

How did you make wedge bond with hudrogen your own in chlophyll molecule 😢

How do we know if the hydrogen is in the back or in the front ?

the structure for cholestrol in the 3rd q is incorrect.. the double bond should be one on the left

Can you give an example of what to do when the H is in the plane. During my ochem class last semester i swear you posted a video with a trick on how to do it but that vid is deleted :(. Now im studying for Mcat and forgot that trick, could you please explain

Could you please tech cbse class 12 physics

In cholesterol carbon near OH has 1H,1OH,2CH2 then how it will become a chiral carbon?

Quick question. At 17:33 wouldn’t there be another chiral point under the 2nd one?

17:08, isn't there another chiral center below carbon #2, since first bond goes to a sp3 C, second to sp3 CH2, and third to a sp2 CH and a hydrogen?

Your videos helped me study throughout my bachelor's degree in chemistry . I am currently a Pharmaceutical Technology grad student and i also work part time as an chemistry tutor and i still watch your videos in order to prepare my lesson plans. I have no words to express my gratitude for your help through all these years!

TY, I appreciate all your hard work. I watch many of your videos and they have helped a lot! ***Possible CORRECTION? looks like the cholesterol molecule in your video has the double bond in the wrong place. *** I kept going over and over this and could not understand why Carbon-5 (the one due south of the methyl group) was not a chiral center? As the figure is drawn, it should be...which would make 9 stereocenters, not 8. But when I looked up cholesterol, the double bond is actually between C-5 and C-6 not as you've shown it. Just in case anyone else got stuck on this problem.

i don't even know where to start but i hope your pillow is cold at night, i hope you eat everything you crave, and i hope you'll only get all the happiness in life. thank your for saving me.

When identifying the chiral centers on cholesterol, I think you accidently missed one and it would be 9 instead of 8. Isn't there a chiral center on the carbon below the one you indentified as 2?

For Q3, the one assigning chiral centers for Cholesterol, would there not be a chiral carbon just below the 2nd chiral carbon? It is attached to a sp2 hybridized carbon, the carbon with a methyl group, and a ch2 carbon that eventually leads to an alcohol

the double bond in the cholesterol is incorrect. it needs to be moved one bond to the left. I kept thinking there were 9 chiral centers until I googled it. Keep up the great work!!

Thank you soo much... When u mistakenly write 3 at the place of 2 i thought my all concept vanished😂and then u said no actually... Thanku best lecture

Another incredible video; thanks so much for posting! If the hydrogen (or lowest priority group) isn't where I want it to be, sometimes I just exchange two groups to make that happen, and remember that that inverts the stereochemistry (R -> S or vice versa).

Would definitely like to see the face behind the man behind my success. The organic chemistry tutor has helped me Ideally with statistics, Calculus, a bit of genetics, general chemistry, Physics and organic chemistry ❤️

Thank you so much. I'm literally sitting here learning what my professor couldn't teach for 2 full lessons. Meanwhile, my sis is also watching one of your vids in another room to teach herself physics since her teacher isn't great either 🤣 keep up the good work educational vids!

Not sure if this will be answered by the time my exam starts, but on 17:02, is the carbon underneath the 2 also chiral, making the entire molecule have 9 stereoisomers? Thanks

He Drew cholesterol wrong it’s technically 9 but if you do it the right way it’s 8

you are a unique teacher I have ever faced IN MY LIFE. you are lightening the difficulty of students. keep moving!

20:41 why we have to reverse it can you explain please???

at 17:30 there is an another chiral carbon on the left of the double bond

In problem 3, why is the tertiary carbon closest to the double bond not considered a chiral center? I am talking about the bottom right carbon on the farthest benzene to the left of the cholesterol.

17:07 Shouldn't the tertiary carbon beneath the one numbered 2 be counted as a chiral center?

Bro's a Legend!! Thank you so much dude!!!

i want to be part of ur members but i could not get the link to join

May Allah bless you, I learn a lot on ur channel

From minute 15:00-17:30 in which he is asking the question about cholesterol...he got the structure of cholesterol wrong. Now normally I wouldn't make a comment like this but for those studying like me, the compound he drew would actually have 9 chiral centers and not 8. The double bond is misplaced, can you see where it should have been to make it actually 8 in true cholesterol?

"Amazing" isn't enough for you! Thank you so much!

16:00 I am just wondering how do you know if the hydrogen atom is solid or dashed when it is not written like this

1:23 , carbon atomic no is 6 , slip of tongue most probably

Would do you do a favor?? Please upload video about Thermochemistry😭. I'll have my middterm exam in tuesday T_T

Thank you sir... your video is really helpful for my premedical exam....lots of love from India 🇮🇳💗

I love u man I spend hours on this topic crying you just made it so simple

I learn a lot from you. But can u change the colour of background. It hurts my eyes and I get headaches, or maybe it’s because the colour you write with is more shiny. Thank u. 😊

In 21:20 how did u say OH group has higher priority over thr BR aren’t we suppose to determine priority according to atomic numbers? And if so BR atomic number is (35) while O has 8

Found this and I just had to like and Subscribe. I am in my 2nd year studying BSC in Public Health Nutrition and this course has been challenging for me, but your explanations have made my life easy. I will be handing in my assignment on Monday 15/08/22 and I am hoping to ace it. ❤️

At 21:09, why is the OH group prioritized over Br when numbering? I thought Br would have higher priority bc it has a higher atomic number and it's farther to the right on the periodic table. If anyone could help fill me in that'd be great! :)