Stereochemistry - Determining R/S notation for Fischer Projections

In this video, we will determine (R) or (S) configuration of molecules drawn as Fischer Projections.
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[@ericdenis1217]

I have scoured every corner of the internet for this video, your the only one that has it!Thanks so much!!

[@MasterOrganicChem]

+Eric Denis Awesome, glad it helped!

[@kadhuandkatto]

Thank you, I've tried getting many profs to explain this concept and upto now I always found it confusing. You made it very clear, simple and easy to understand.

[@misssweethearted]

Thank you so much!!!! I was practicing for the ACS test didn't really understand stereochemistry and struggled with it. After watching your videos I got a perfect score on the stereochemistry section!!!! It's very easy for me to now assign R/S configurations from fishcher or any form. God bless your soul thank you so much for making these videos. You truly helped me.

[@selenophile6688]

After 9 years still this was extremely helpful...thanks a lot😊

[@MasterOrganicChem]

My pleasure 😊

[@blufire9]

Thank you so much for uploading this! I thought I was going to fail my exam next monday, but I feel more confident now that you've explained it. :D

[@MohammadBakhtiyari-j3r]

I searched a lot for this video and find it here. Thanks

[@imeshasiriwardena7437]

This is truly helpful and the way you teach is so simple and understandable . Thank you .

[@sfindaa8523]

Thank youu!!! I have an exams in a few hours and my prof couldn't explain this. You made it clear as glass. Thanks a bunch

[@TheLouisaM]

THANK YOU SO MUCH ! I finally understood the trick ! :))

[@MasterOrganicChem]

awesome! thanks for letting me know TheLouisaM

[@MasterOrganicChem]

yes, the arms of the Fischer come out to hug (or strangle) you.

[@Islam4Eva78692]

i want to give you a hug master

[@stephenpropst1973]

thank you Organic Chemistry master. Final exam for Ochem two preparation...remember this video from last semester too :)

[@mercyk6064]

you are a life saver! thank you for saving my grade...

[@Islam4Eva78692]

you are an amazing man.. thank you soooooo much master organic chemistry the name says it all ;) my lecturer needs private tution from you.. i'm going to share your page over facebook and watch how i make you reach 1 milliion subscribers and make you money.. this is the least i can do it! thank you.. I wish i could write you a letter and visit you to give you a hug just like your own instructor taught you regarding fisher projections

[@ektajanjmera6149]

Thank you sir , I was in awe to study this thing, this video is most appropriate video for this topic. Thank you so much sir for fulfilling my thurst of learning this topic

[@parinithamaben4141]

This was so helpful! Thank you so much!!

[@shaykay1079]

I don't think you would because then H, being your #4, is no longer in the front. The reason you flip it is that in the 3D structure, you want your #4 pointing away from you in order to determine R or S. If it's in the front (coming up and "hugging" you) then it's not pointing away from you. It really helps if you make a 3D model, and then you can actually see it for yourself.

[@Aerilo95]

great video, mate!

[@MasterOrganicChem]

thanks!!

[@Islam4Eva78692]

no thank you master.

[@pc19937]

Thanks... It helped 👍

[@MasterOrganicChem]

Glad it helped

[@chynnadoll5740]

I understand exactly how you did the question but I have one question. The way my lecturer taught it is that since H is usually forward the assignment rules are backwards therefore clockwise is S and counterclockwise is R. Am I missing something? Please help. Thanks in advance ☺

[@gulcincandemir7466]

Thank you soo much, great video!!

[@MasterOrganicChem]

Glad you found it helpful!

[@soniaedithrivasgutierrez272]

excellent explanation. thak u' so much to share the value knowledge

[@VijayKumar-qc9ys]

Thankyou so much sir....finally got the trick

[@errr300]

thank you... very well and easily explained :)

[@Kencan254]

Do you offer organic chemistry tailored for the MCAT curriculum?

[@matthiasfarrugia3177]

Very informative video! I just would like to ask you, when assigning the rotation - S or R - and the H atom is either on the north or south position, do you flip rotation or not? Thanks wholly! (:

[@shivanisartgallery396]

You solved my problem .thankuu nice video😊👍

[@michaelmao1432]

Thanks so much i enjoyed it

[@emmagrecu6654]

THANK YOU

[@MasterOrganicChem]

You're welcome! If you found this video helpful, Our MOC membership has a lot to offer. Check it out here: bit.ly/2YctxPb

[@priyambadarout1469]

thank you so much

[@MasterOrganicChem]

You're welcome!

[@chayandivisht974]

truly amazing

[@joeyleung7416]

This is a rely great video! Thank you so much!! :))

[@keyuranand]

I would really appreciate if u could make a video on how to draw a fisher structure for D-glucose and how to determine R and S for same. PLease !! thank you

[@hamzamostakim6857]

THANK YOU SO MUCH ♥♥♥

[@AKSHAY-ft1pe]

Thnks bro..😍

[@keyuranand]

I think carbon on chiral center 2, is not "R" but its "S". is it? BCZ "H" is in the plan already, than we dont have to flip

[@elvintiranbalan5882]

Thanks

[@babemunas]

LIFE SAVERRR! lol Thanks so much!

[@kbb8846]

Hello, the names of your videos don't match. I am having difficulty finding your videos. For example in this video you say if you saw sawhorse projection, but I cannot find it. Could you please kindly guide me to the list of your videos. I like your videos but I cannot find what I need even though according to you they exist.

[@zahraaabbas5895]

THANK YOU THANK YOU THANK YOU 😭😭😭😭

[@hamzamostakim6857]

😅 عربية ؟؟ ههههه ربما حتى مغربية ههههه

[@KingKhan-xz7fw]

Great video ,but i did not understand carbon 2 has R again on flip direction

[@nataliekashkanska7928]

Thank youuuuu ❤️

[@ATinyPlace]

i think there is a mistake in naming those carbons, you put carbon #1 and carbon #2 for the R and S decision. It was supposed to be Carbon # 2 and carbon # 3

[@MasterOrganicChem]

Ah yes. thanks - put up an annotation.

[@ATinyPlace]

Very useful video btw. helped me a lot! gonna kill that test tomorrow.

[@zakikoelbou]

thank you soo much master

[@sukhbirkaur4115]

thank you soo much!

[@xeryd6037]

ty

[@johnchristopher9477]

thanks sir

[@kartikeyshaurya1827]

really helpful #thanks

[@muhammadsalmans6763]

🔥👍👍👍

[@MasterOrganicChem]

Thank you! If this video was helpful, you may want to check out our month-to-month MOC membership for access to over 1500 quizzes, Flashcards, the Reaction Guide, and more. Check it out here: bit.ly/2YctxPb

[@pratiksawant5568]

U ROCK !!

[@LM-gi8hy]

What is the difference between Z,E and. S,R ????

[@tallon3925]

Thank you :)

[@merna2724]

Thank you

[@7or8]

جامد يا صاحبى

[@kuldipkukadiya1849]

Nice.

[@aliciadias240]

The C2 is S configuration

[@phaya6269]

please the first example should be S not R because it was anti-clockwise when the H atom points towards you

[@noork85]

I really liked the hugging comment...gave me a good laugh

[@chayandivisht974]

how to convert Fischer to sawhorse

[@tonysonto]

thanks...ohh great..

[@heatherva]

I still don't understand how to find stereocenters

[@Apratim98]

There are only two requirements for that 1.The carbon should be sp3 hybridised i.e bonded to 4 groups tetrahedrally 2.All those 4 groups should be different.(The reason is because even if two groups become same and the mol, then loose the ability to exist in two spatially diff. forms and no matter how you arrange those 4 groups they will superimpose i.e they will be same).

[@tweetybirdswagg]

Made it worse lol

[@CoffeeAndShop]

just look for any C atoms that are connected with 4 different groups. That's all. If there are any double or triple boundaries, there is automatically no stereocenter. If a C has two or more H's it is no stereocenter. If a C has a H, a C and two CH3 it's no stereocenter, because the CH3 is double. If it has one Cl, one H, one OH and one CH3 it's a stereocenter. If a C has one Cl, one H, a CH3 and a C with an OH it's a stereocenter, too. Just look, that everything connecting to your C is different. Try to draw out these molecules, maybe this helps :)

[@keyuranand]

sry i missunderstood,, its out in fisher projection :) so we have to flip it !!!

[@shefalivarshney3647]

Confusing! Not really helpful..

[@vishxl]

u sound like salman khan of khan academy

[@pashkarps932]

Tamil la poduga