Chirality/Stereochemistry Video Series: Video 6
Fischer projections provide a simple 2-dimensional representation for complex 3-dimensional structures. Which is great for drawing complex molecules, but not so much fun if asked to determine R and S configurations.
Many books and professors will have you redraw the Fischer projection into a 3-dimensional sawhorse or skeletal structure.
I find this to be a waste of time and source of needless confusion on exams. This video shows you how to quickly and easily find R and S configurations directly on the Fischer Projection. Guaranteed to save you time on your next stereochemistry quiz/exam.
In fact, if it DOES save you time come back to this page and let me know by leaving a comment below.
(Watch on YouTube: Fischer. Click cc on bottom right for video transcription.)
Links & Resources Mentioned In This Video:
<– Watch Previous Video: R and S configuration for Lengthy Complex Substituents
–> Watch Next Video: Newman projection chirality
This is Video 6 in the Chirality/Stereochemistry Video Series. Click HERE for the entire series.
Ready to test your stereochemistry skills? Try my FREE Chirality/Stereochemistry Practice Quiz and follow along with the Stereochemistry Cheat Sheet
Would a Model Kit help you? Watch How to Use Your Organic Chemistry Model Kit.
Wow, your videos are so much better than kaplan and khan academy. You explain everything in a really practical way, and your website is so comprehensive and easy to navigate. I can’t thank you enough, you’re really helping me with some last minute studying! Wish I had found you sooner!!
Sajeev Yadav says
In your first example one of the carbon has (HHS) bonds other has (OOO) bonds ,why did you consider only S and O ,if I consider overall who wins it will be(OOO) carbon, please explain why is it so?
Bilal Biriyani says
Hey great video. To save a bit a more time when the lowest priority is on the horizontal lines, you could just find out if it is R or S, then just put your answer as the opposite, since the lowest priority is facing the front. Otherwise your videos are amazing and very helpful. God bless you.
Is the amino acid cysteine? Your videos have saved my friends’ grades as well as my own! You’re amazing
Amazing videos and the way you explain things! What seem to be impossible to figure out thanks to you and your tricks becomes a pleasure in studying 🙂
your teaching goes a long way helping me understand better. God bless you
VERY VERY PERFECT APPROACH..MAKES ORGANIC CHEMISTRY SIMPLY BEAUTIFUL
Keep up with your amazing job you are doing !!!…we need you ! GREAT!
Leah You are a Great Great Teacher!!!!!!!!!!!!!!!!!!!!!
Thank You Much!!!!!!!!!!!!!
You’re welcome, Jenish!!!
God Bless you!!!! Seriously I only learn from your videos!
I’m happy these have helped you, Anfisa!
GREAT VIDEO! why can’t I watch the swap method video though?
I’m not sure, did you try via this page: https://leah4sci.com/swap-method-for-finding-r-and-s-configurations-chirality/
Wish you were my instructor.
I get that often! I do offer tutoring and a Study Hall membership!
Your the great keep on!!!!!!
Thank you! Keep on, Keepin’ on!
thanks Leah you are great teacher
That video was clear and concise. Thank you for all that you do!
Thanks JA, glad to help