Cahn-Ingold-Prelog Convention (Determining R/S)

No video

Cahn-Ingold-Prelog Convention (Determining R/S)

Рет қаралды 329,038

Күн бұрын

In this clip, the Cahn-Ingold-Prelog Convention is introduced, to allow for assignment of absolute configuration of stereocenters. I dunno why it took three dudes to make the convention, but it's pretty sweet if you think about it.
Watch the whole Organic Chemistry playlist: bit.ly/ProfDave...
General Chemistry Tutorials: bit.ly/ProfDave...
Biochemistry Tutorials: bit.ly/ProfDave...
Biology Tutorials: bit.ly/ProfDaveBio
Classical Physics Tutorials: bit.ly/ProfDave...
Modern Physics Tutorials: bit.ly/ProfDave...
Mathematics Tutorials: bit.ly/ProfDave...
EMAIL► ProfessorDaveExplains@gmail.com
PATREON► / professordaveexplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: amzn.to/2HtNpVH
Bookshop: bit.ly/39cKADM
Barnes and Noble: bit.ly/3pUjmrn
Book Depository: bit.ly/3aOVDlT

Пікірлер: 339

@RoboThot711 5 жыл бұрын

Not to be dramatic but you are literally saving my life right now

@rethanyadecgal1605 4 жыл бұрын

So does for me too!!!

@doctorusaid4962 3 жыл бұрын

So does for me 😜

@ToastySNXZ Жыл бұрын

4 years and he is still saving our lives

@harshag.2085 7 жыл бұрын

I learned more in this 10 minute lecture than the 3 hour lecture in school.

@ashishbajpai2155 4 жыл бұрын

hey r u from America?

@rethanyadecgal1605 4 жыл бұрын

Omg its true

@thanujaherath7418 2 жыл бұрын

Totally agree

@peterselo-oghenejoshua9280 2 жыл бұрын

Absolutely true 💯

@user-uk9xf3jr4u 4 ай бұрын

I totally can relate with you ... but you know whenever I dont understand a concept at Uni, I don't why I blame myself 😂

@Bukusubaru 4 жыл бұрын

I just graduated with my undergrad and I had never thought of the different spatial orientation view... The way you explain things makes so much sense! Thank you!

@AmiraDreams 9 жыл бұрын

Best chemistry teacher on youtube so far!

@adityasharma2380 3 жыл бұрын

And the organic chemistry tutor...... He is solid too

@adhiyanthaprabhujeyashanka2091 2 жыл бұрын

Not so far, he is forever ♾️

@arnold4712 6 жыл бұрын

"Thanks for watching, guys"....no, thank YOU

@kaitdoeschem9181 5 жыл бұрын

SAME

@katraam 3 жыл бұрын

Not exaggerating but I swear down, your videos are sooooo much easier to follow and understand. You just seem to make all the pieces fit together! Thank you a million times over for your videos, they are saving my sanity! 😂

@clark0660 8 жыл бұрын

The amount of views is waay lower than it should be, you are great at explaining concepts. Also, nice hair!

@to181 6 жыл бұрын

I was having issues with spacial imagination until I saw you look at the hydrogen and imagined it in the back and then you could see all the 1,2,3 priorities in the plane. Thanks so much!!

@shafinhabib9771 4 жыл бұрын

Organic chemistry makes no sense to me

@damjan3385 53 минут бұрын

U passed?

@Mrjmaxted0291 5 жыл бұрын

Holy crap this contents amazing. Please keep making these, easily the clearest and most concise chemistry tutorials online.

@songohan393 4 жыл бұрын

I thank you from the bottom of my heart

@sunehrikiran5638 6 жыл бұрын

I've seen many of your videos they are all to the point .Easy to understand . You explain very well that it leaves me with no confusion .

@langelihlekhumalo2860 4 жыл бұрын

Wow, this was super helpful!! The way you explained it and made it so simple makes me feel dumb for not getting it in the first place😂

@liyamariyamsalman5276 3 жыл бұрын

I had been spending hours figuring out R and S and the E and Z config!!! But prof Dave.. You have saved my day.. Your videos are super cool and way way easier to process mentally than the hours of lectures i have heard.. Thank you sir❤

@michaelleonardlubiano3912 6 жыл бұрын

You have explained the Cahn-Ingold-Prelog convention well, my dear Prof Dave! Thank you so much!

@Haxor4000 8 жыл бұрын

You are fantastic! Helped me alot pass my organic chemistry exam. This channel needs more attention!

@ProfessorDaveExplains 8 жыл бұрын

tell your friends!

@narayanasastry8055 4 жыл бұрын

@thecoreybrown 5 жыл бұрын

Thanks Dave! You really have helped me over the years! You are a TON better than Crash Course!

@g_ayugane Жыл бұрын

Hope Crash Course doesn’t see this comment🫣

@khadzdama6700 5 жыл бұрын

Thank you honestly. I just watched your isomers series and it helped me more to understand what a university proffessor couldn't explain correctly.

@joyceampong2756 5 жыл бұрын

You might have just saved my grade in bioorganic chemistry! Thank you so much! And yes, I hit those like AND subscribe buttons like they just did unspeakable things to my pet! Thank you again, all the way from Vienna!

@ruchikadevashish7395 3 жыл бұрын

Hello Dave Sir, NAMASTE 🙏🏻 I am Ruchika, *your* Student from India. I literally love your videos. They are so rich with knowledge and good explanation. I am preparing for MEDICAL COLLEGE ENTRANCE EXAM and I am a bit weak at chemistry. I just want to say that I find your lectures amazing and they help me a lot. Thank you. 😊

@psy_inamorato5703 2 жыл бұрын

Do you got it?

@georgeacenas2349 7 ай бұрын

Built a tetrahedral stick model out of tape pencils and got the answer. This RN is learning to better see the carbon chains. Thank you Professor Dave. Subscribed, liked and learning.

@riceyeti5224 4 жыл бұрын

Literally this is the greatest channel to ever exist. It is saving my o chem grade because I am ACTUALLY LEARNING SOMETHING!

@13Drumsticks 8 ай бұрын

Once again beautifully explained and a perfect refresher to come back after a long time out of OC. Thanks so much!

@lancemaxwell8464 Жыл бұрын

I can't believe it's that easy! You explained in a single video a concept that boggled me for an entire semester

@aziz-qp7pm 7 жыл бұрын

HOLY FUCKING SHIT FINALLY A WAY TO ASSIGN R AND S WITHOUT CONCEPTUALIZING!!!!

@ziorah 4 ай бұрын

I feel like i just found solid gold, thank you so much Professor Dave, still saving grades even 8 years later 😂

@DatDack 5 жыл бұрын

the fact that my profs try to make us waste our time building every molecule to assign R and S is absurd - thanks so much for this new technique, it's so much more efficient!

@bongwords2782 5 жыл бұрын

U r just making me in love with the topic when my lecture sucks 💕💕 thnx a lot sir 💙

@TheStarDreamer 3 жыл бұрын

OMG, I can't explain, how helpful was that😭 Very Thankful to you sir🙏🙏

@user-sy5gw3jd3y 7 ай бұрын

No one taught me that I can arrange the molecule specially, everyone sticked to the cheat method and that confused me a lot, thank you

@sathvikmalgikar2842 3 жыл бұрын

you really deserve to be called "chemistry god". Thank you

@rertar4499 2 жыл бұрын

Chemestry jesús

@motivational_Insights Жыл бұрын

thank you so much. I have looked everywhere until i got you. this explains my predicament. I knew the wedge or dashed hydrogen but when in the plain the textbook I use said nothing about it. Thank you so much

@hussainmandli4906 6 жыл бұрын

your methods are so much easy to connect n the way you explain stuff is just amazing.Thank you prof. Dave u have been Very helpful to understand complex stuff easily n effectively.👍

@amccutcheon1988 Жыл бұрын

Thanks for clarifying the priority system.

@zacharychapman3732 6 жыл бұрын

This helped so much. I spent a lot of time on Khan Academy trying to figure this out.. I'll come here first next time. Thanks!

@rayanthonytalisay2469 3 ай бұрын

Thank you so much! I clinched my test in Organic Chemistry few hours ago. I am the top-scorer. I love you so much!💗

@Nique658 7 жыл бұрын

It's so much easier the way you break it down. Thank you soo much !

@abdullah-lk3pk 7 жыл бұрын

cannot be more thankful prof ..

@e_my_nahbee9334 6 жыл бұрын

You are a Genius! Studying Pharmacy can be tough, but you just made it a bit easier. Thank you and greetings from Vienna! :)

@ornellafera1166 5 жыл бұрын

Cool - I will start studying pharmacy in Vienna in one week :)

@usanayamkayan4930 3 жыл бұрын

I watched this video when I was in organic chemistry class 5 years ago. Now I still watch this video to revise the lesson. Love you Professor Dave ❤️

@RedfitCa 7 жыл бұрын

Thanks Prof Dave! I am taking an online Chem course and you have been extremely helpful.

@ProfessorDaveExplains 7 жыл бұрын

happy to be of service!

@poodles4058 7 жыл бұрын

Professor Dave Explains but if they do not give where the wedge bond and dash bond is how would I know whether the hydrogen is in the front or back of the compound

@ProfessorDaveExplains 7 жыл бұрын

prathyush srinivasan good question, you can't! some kind of three-dimensional notation must be used to assess stereochemistry.

@poodles4058 7 жыл бұрын

Professor Dave Explains oh okay

@shannonoconnor1264 5 жыл бұрын

my professor exmplained something about swivelling a double bond and it went straight over my head, this is so much easier to get

@sdparsons 2 жыл бұрын

Your videos have helped enormously over the years, I am very grateful.

@shannonheinig8912 2 жыл бұрын

8:10 thanks I’d never thought of it like this

@THEMADMAN254 2 жыл бұрын

3 hour lecture of my bad professor which was painful to try and understand, summarized in 11 minutes. Thank you Professor Dave!

@MrBernking 7 жыл бұрын

awesome, helps me in first year med school switzerland :)

@khanrauf4024 3 жыл бұрын

man youre great watching you for like 3 years

@solatansolitarypoi6404 Жыл бұрын

I have an exam tomorrow and you really assisted me

@marissar2953 6 жыл бұрын

Keep up these videos! You have no idea how helpful and relieved I am to understand this now :D

@Paraselene_Tao 2 жыл бұрын

Extremely high quality again.

@diyaagneslazar345 6 жыл бұрын

This is truly amazing. Thanks a ton for this.

@alessandrac1940 7 ай бұрын

i simply remembered 2 acronyms: ACR and TCS.. to elaborate, if the lowest priority group (usually H but not always) is away from me and i count the groups in a clockwise order, then the molecule is designated (R). If LPG is towards me and it's clockwise then it's (S). idk if that helps

@maylinisabella_ 3 жыл бұрын

i hope proffessor Dave is having the most wonderful day

@videosformybrain3606 4 жыл бұрын

watched a days worth of r/s configuration, I think this is the best method

@reksa__7417 Жыл бұрын

I learned with you more easier than how my Prof. trying to teach us. OMG thanks a lot Love from Türkiye

@ghyzig Жыл бұрын

you my good sir, are a true legend

@aryansonu2440 5 жыл бұрын

This Puzzled me from last three days but after watching ur video I resolved it ... thanks sir

@violetteruizdiaz520 2 жыл бұрын

Thank you, you literally saved my life !!! You make it look so easy! Wonder why they don't teach us that in school..

@algorithm1313 8 жыл бұрын

you have less videos but the ones you have made are small and perfect thanks your awesome!!!!

@BLODSWIPER 3 ай бұрын

For the last molecule, its easier to just change the 3D perspective than re-arrange the atoms. Simply imagine a stick with 3 balls stuck to the end, and rotating the stick makes the balls rotate with it. Now rotate it until the H-Ball is in the back, and count priority from there. Now you don't have to flip the rules, since you did not change the molecule and you still get the same answer: S.

@amanrubey 7 жыл бұрын

by far the best

@harishsasankarm9428 3 жыл бұрын

Shouldn't the original one be R? Cuz the Ethyl is to right, so H-H-H < H-H-C, like in last problem, the one with CIP convention? Please tell me if I'm going way too far from the point.

@srivalli3200 7 жыл бұрын

ur teaching is so much effective ...thnx sir

@katybechnikova2821 7 жыл бұрын

i know a mnemotechnic help with the r/s. if you have the substituent 4 already away, picture yourself turning a car. the molecule is steering wheel and you turn it from 1 to 2 and then 3. if your imagined car is going right, it's R, if left, it's S.

@nonyyysuga2829 2 жыл бұрын

You saved my future really

@plag9021 2 жыл бұрын

Great content as always. Thanks for all your videos!

@chintusct5258 4 жыл бұрын

you made my chem configuration very comfortable...

@vipinagarwal7715 7 жыл бұрын

i really liked the method of orienting myself in the plane and see the structure. and get the answer quickly

@PodBites77 6 жыл бұрын

Sir, you are a great teacher.

@JesusChristTheOnlyTruth Жыл бұрын

Thank you so much for this video!

@albertjoseph2098 7 ай бұрын

In very short span I learnt much. You are awesome and definitely handsome 😍

@dulyanaapoorvawanigasooriy1520 2 жыл бұрын

Best explanation ever. Thanks Prof.!

@mikibaquilod3929 4 жыл бұрын

"I just wanna stress the fact.." I'm already stressed rawrawrawwwr but thank you Professor Dave

@Alchemist_171 4 жыл бұрын

Damn. It took him just 11 minutes to explain an hour long lecture.

@ziangliu9024 3 жыл бұрын

this guy is the best at explaining

@abidaalokozai5706 6 жыл бұрын

My God , I have my exam today and thank you for saving my time , You are the best!!!!

@PaKiKiNg908 7 жыл бұрын

best chemistry professor ever!!!!!!!!!!

@michellerabi6511 9 жыл бұрын

Thank You, Professor Dave. For many things, but today, for teaching me chemistry as my professor I paid can't seem to explain it.

@khalifabio Жыл бұрын

Thank you very much Professor

@Valium-jh9or 4 жыл бұрын

2:50 is the reason im here, never got that thank you so much..

@kapilshinde9177 3 жыл бұрын

7:40 U can flip between the other 2 groups ( right and left) as well at the same time.

@tasfiajashim4217 9 жыл бұрын

You're a lifesaver

@shannonoconnor1264 5 жыл бұрын

why are this guys free youtube videos more educational than my paid for college class

@hixamjocular6591 6 жыл бұрын

there's also another trick it can help you guys to get the right absolut configuration which's if you've a pair number behind ( in back ) you'll assign directly ( clockwise ) if you've an impair number in back then you'll assign inversely ..

@prathameshsannak6182 7 жыл бұрын

Thanks professor..... You made it easy

@AdamsAppleseed 3 жыл бұрын

Brilliant video, cheers Dave.

@xpteam4158 3 жыл бұрын

very good explanation thanks

@curtpiazza1688 2 жыл бұрын

Great brief explanation!

@akirauzumaki3805 3 жыл бұрын

Your explanation is super easy to comprehend and super nice! Thanks prof.! i finally can pass my exams now lol XD

@djchemtalk2946 6 жыл бұрын

Wow.... good explanation thanks prof.

@natashawahid7199 5 жыл бұрын

stay bless dude

@secretgarden8142 3 жыл бұрын

Thank you so much 11:54 pm sunday 20/12/2020

@ksc5802 3 жыл бұрын

Thanks lot

@marvellnelson9141 6 жыл бұрын

why there isnt a corbon attached to 3 which is the methyl group

@ProfessorDaveExplains 6 жыл бұрын

the which what now?

@victorianguyen3040 7 жыл бұрын

You're incredible!! really appreciate your videos :D !!

@manusharma9239 7 жыл бұрын

victoria Nguyen Are you Vietnamese?

@velaharivelahari8748 5 жыл бұрын

Thank you so much sir it was very useful...I was confused with this but now everything is absolutely clear...Thanks a tonne for this vedio

@vasavipaidakula906 2 жыл бұрын

👌Really helpful simple and superbbb

@its.shammah Ай бұрын

thank you!!!!!!!!! PROFESSOR.

@pratikchavan3875 2 жыл бұрын

8:15 It will be easier to make its Fischer projection and make a odd exchange and by fixing Cl then Hydrogen will be assigned furthest away from us.

@bisharofarah4431 Жыл бұрын

i was so confused when I learned this in class but now am like ohhh