Thank you mam, you literally had no idea how I was stuck with this concept for a month! The concept of rotation was beautifully explained too. Thank You.
You are very welcome! As for where to put the invisible H, if the molecule is drawn with stereochemistry you can 1- look at the visible sub (dash/wedge) and place accordingly, then put the H on the other side 2- you can draw in the appropriate dash/wedge/line for the H and then place accordingly
Since molecules rotate in space, it doesn't matter if you look at it from the right or left. Just make sure the perspective lines up with whatever form you're turning it into
sorry,but may i know if the guess and check method,for the up down group,is it ok to put it reversely if I just check the R and S starting from the group corresponding to the 3D structure,for example,I put the CH2OH on the top in the last example, and use the guess and check method and get the fischer projection,is it equivalent to the example one? thank you
As long as configuration remains the same, it's fine to rotate the Fischer projection by 180 degrees. However, convention usually dictates us putting the aldehyde at the top. If wanting a faster way to identify configurations in a Fischer projection, make sure to my Fischer projection stereochemistry trick here: ua-cam.com/video/lf6hLBl6wxo/v-deo.htmlsi=TZEb0343pEX7AVMk
Remember that, in the Fischer projection, the Hydrogen is coming forward out of the paper. In order to find the correct configuration, we must move that hydrogen to the back of the molecule. The swap method can be really helpful for finding configurations in a Fischer projection. See this video for my Fischer Projection stereochemistry trick: ua-cam.com/video/lf6hLBl6wxo/v-deo.htmlsi=TZEb0343pEX7AVMk
Thank you mam, you literally had no idea how I was stuck with this concept for a month! The concept of rotation was beautifully explained too. Thank You.
You're so very welcome! I'm thrilled I was able to clear things up for you
thank you sooo mucchhhh, this is the only video i understand after hours and hours trying to understand it 😭😭
I am SO happy to help you understand it quickly and easily!
That was genuinely helpful, thank you sm. The only video/article that explained it well and in an easy manner!
So glad it was helpful!
Tank you mam .the way you taught was really easy to understand
You're very welcome! I'm glad you found it helpful
WOOOWWWWW Thank you soooo much for this break down!
Question: How do you know which side to place the invisible H? Left or right of the atom in front?
You are very welcome! As for where to put the invisible H, if the molecule is drawn with stereochemistry you can
1- look at the visible sub (dash/wedge) and place accordingly, then put the H on the other side
2- you can draw in the appropriate dash/wedge/line for the H and then place accordingly
Great video. The left/right eye method is one in which I will never understand. I'm sticking with the R/S guess/check method
Sounds like you found what works for you! Thanks for watching!
This video is genius! This is the way I wish I was taught things 💕
Wow, thanks! I'm so glad you not only liked the information but how it was presented!
THANK YOU!!
You're welcome!!
tysm for making the video! i just want to ask why do we have to look in that way to figure out fischer projections? tysm for your help ^ww^
You're very welcome! As for why do we have to look at it this way, I'm not sure I understand what you're asking
I really like the ways you simplify everything and have awsome mnemothech! Can you do a video about glycogenesis.. really I can’t understand..
I hope to tackle all of the different biochemistry pathways at some point soon
Please how do you know if you should look at the molecule from left side or right side or whether to look from the top or down?
Since molecules rotate in space, it doesn't matter if you look at it from the right or left. Just make sure the perspective lines up with whatever form you're turning it into
need more content on basics for orgo 1
I have an entire youtube channel for that leah4sci.com/youtube
sorry,but may i know if the guess and check method,for the up down group,is it ok to put it reversely if I just check the R and S starting from the group corresponding to the 3D structure,for example,I put the CH2OH on the top in the last example, and use the guess and check method and get the fischer projection,is it equivalent to the example one? thank you
As long as configuration remains the same, it's fine to rotate the Fischer projection by 180 degrees. However, convention usually dictates us putting the aldehyde at the top.
If wanting a faster way to identify configurations in a Fischer projection, make sure to my Fischer projection stereochemistry trick here: ua-cam.com/video/lf6hLBl6wxo/v-deo.htmlsi=TZEb0343pEX7AVMk
Thankyou madam I think I am about to understand
Happy to help!
You should do one where you have to get the methyls on the same plane before converting into a fisher no videos explain this.
Why would you want to get them in the same plane? Why not just convert from whatever form you're given?
man what the fuckkkk, this is killin me
This is a tricky topic, hopefully it feels a bit better by now
I don't want to know where Mr. Organic Chemistry wears his second bow tie. I knew he was a perv. 😂
😆🤦 on his neck? on the first button of his shirt?
I don't get it, 7:49 i did the guess and check method and in the left they were both s configuration but in the fisher they are both R
Remember that, in the Fischer projection, the Hydrogen is coming forward out of the paper. In order to find the correct configuration, we must move that hydrogen to the back of the molecule.
The swap method can be really helpful for finding configurations in a Fischer projection. See this video for my Fischer Projection stereochemistry trick: ua-cam.com/video/lf6hLBl6wxo/v-deo.htmlsi=TZEb0343pEX7AVMk