Organic Chemistry - How to Solve NMR Problems

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ChemProDao

Күн бұрын

Пікірлер: 50

@nnajieni338 Жыл бұрын

Thank you I watched so many videos. Your video is the only video that actually helped me. Thanks so much!

@jeanpyful Жыл бұрын

Thanks for your very clear explanations. For the second exercise in this video (C13H18O) I found a second answer choice that also correlates with the given spectrum: Benzene-CH2-CH2-CH splits into CH2-CH3 and (C=O)-CH3. Although analyzing the chemical environment, your answer is more related, since the CH2 triplet is the most unprotected and is located further down the field, therefore it would be closer to electronegative oxygen.

@chemprodao3382 Жыл бұрын

your structure would work too.

@alegoncalves472 3 ай бұрын

I'm glad to see this comment since I obtained the same structure, and I was quite a bit sad of it not being correct 😅 It seems like it was actually not that illogical :) 😊

@jairuskibet1472 2 жыл бұрын

Excellent presentation

@studentseulo4469 2 жыл бұрын

Thank you, fun lecture Sir.

@SarchanaPrince 2 ай бұрын

You are my hero. Because you solved my biggest problem❤

@ingamhlekwa3724 2 жыл бұрын

can you please sir record a vidoe where you have to deduce a structure from the given H spectra, no molecular formular is given

@BEINGALIUMER 2 ай бұрын

Great work

@diarmaidminnock1368 Жыл бұрын

Thank you good video

@lindatti7591 2 жыл бұрын

Thank you so much ❤️

@user-hw2td8ph7s 7 ай бұрын

감사합니다 선생님

@plamenpenchev262 Жыл бұрын

NH sometimes goes up to 13 ppm. Usually in most of the compounds I worked with (isolated from nature or synthesized) it was between 12.4 and 7 ppm.

@johannessievers6759 Жыл бұрын

you got an example for like 13ppm? is it an R=CO-NH2?

@plamenpenchev262 Жыл бұрын

@@johannessievers6759 Cannot find just now the example for nearly 13 ppm (I am on holiday now) but you can see one of my papers at web.uni-plovdiv.bg/plamenpenchev/art25.pdf Even my remark I like your channel. Gretings from Bulgaria.

@johannessievers6759 Жыл бұрын

@@plamenpenchev262 ok i guess those NH-proton signals are some of the highest you can find; in literature for learning purposes i recently read about the shift being between 0.5 and 5 .. thx for the link

@chemprodao3382 Жыл бұрын

amine NH and amide NH have very different chemical shifts. Amide NH can be much more deshielded from 7-14 ppm as you've said it.

@chemprodao3382 Жыл бұрын

Amide NH are more deshielded than amine NH

@asgreen139 4 ай бұрын

I couldn't do these for several hours because nobody taught me how. found your channel and you gave me a working strategy in 30 minutes. god bless you

@AlessiaRizzi-tk9ed Ай бұрын

Hi can i have this exercises, please?

@elysian711 2 жыл бұрын

Very well explained! Can I get this handout?

@chemprodao3382 Жыл бұрын

send me your email @ chemprodao@gmail.com

@biasdastan Жыл бұрын

Can you please solve a problem. If we have to draw an inverted tree diagram by givin shift value of 1.52ppm showing 14.0, 8.0, 4.0, 2.0 Hz coupling constant

@chemprodao3382 Жыл бұрын

sorry that I can't give the answer to your assignment. One of my video talks about this exact topic. It's calls signal multiplicity, which you can find on my channel.

@Dieu-Le-VeutKONGO-BANGA 4 ай бұрын

Bonjour est ce que vous pouvez mettre avec une traduction de la vidéo en français stp

@haaniaishaq4966 Жыл бұрын

Great explain I need this notes

@chemprodao3382 Жыл бұрын

please email me at chemprodao@gmail.com for the notes.

@haaniaishaq4966 Жыл бұрын

@@chemprodao3382 can u please make a video protocol or procedure for estimation of steroids biosynthetic pathway in plants in lab..

@studentseulo4469 2 жыл бұрын

Hello, great lecture Sir, could I perphaps ask for the book you used?

@chemprodao3382 2 жыл бұрын

I can send you the handout. What's your email?

@studentseulo4469 2 жыл бұрын

msbaespring@gmail.com

@frostbolt25 2 жыл бұрын

hi there thanks a lot for this video. for the last question, would it be correct if I switch the position of the -ch2ch3 group and the h in -ch2 attached to the carbonyl? thank you so much!

@chemprodao3382 2 жыл бұрын

if the CH2CH3 were to connect to the carbonyl (replacing the CH3), we would expect the CH2 to be a quartet with a chemical shift of roughly ~2.1 ppm, which we don't have in the spectra, so it wouldn't work.