Homotopic, Enantiotopic, Diastereotopic, and Heterotopic Protons

[@mariewolf3303]

You are an angel. I've been trying to study my chem book for over 2 hours now and wanted to cry and you explained it so much better than an entire chapter in less than 6 minutes you sweet beautiful man.

[@PunmasterSTP]

I know it's been two years, but I just came across your comment and was curious. How'd the rest of your class go?

[@BIGBALDBOLD]

​@@PunmasterSTP pun :)

[@PunmasterSTP]

@@BIGBALDBOLD That’s why I’m here. That and asking people how they did on tests they took long ago…

[@BIGBALDBOLD]

@@PunmasterSTP nice, I'll be having an organic test the day after, I'll remember to give you the review

[@PunmasterSTP]

@@BIGBALDBOLD Good luck!

[@leynanguyen3857]

my professor couldnt save his life to explain this. This makes so much more sense now thank you!!

[@laurel5791]

Thank you so much. Tomorrow, I have an NMR examination. Your video saves my life🙈🥺💪

[@annashearer4143]

My organic chem lord and savior

[@theblackvo1d]

you have saved my midterm tomorrow you beautiful genius man

[@minioohs57]

My orgo chem exam is in a few days. Thank you so much for your clear explanation!

[@rileyduncan1535]

minioohs57 mine is in 6 hours

[@aiqbal02]

@@rileyduncan1535 How'd it go

[@rileyduncan1535]

@@aiqbal02 actually went really good 😂

[@PunmasterSTP]

I know it's been years, but I just saw your comment and figured I'd ask. How'd the exam go?

[@MJ-td5mw]

You made this SO simple. Thank you!

[@ethankrenos2477]

been a while since I have been on this channel, congrats on all the success Dr. Dave!!! Thanks for all the help over the years!:)

[@asadsiddiqui4585]

Taking Organic Chemistry 2, and holy crap that was a beautiful explanation for something I was panicking a little about! Thank you so much, professor dave!

[@PunmasterSTP]

How'd the class end up going?

[@leulgetachew4745]

Me: Watches 2 hours lecture on this form my Uni professor Also me: comes to KZbin confused AF Prof Dave: Talks for less than 10 mins Me: Wants to fight everyone that had the audacity to dislike this video P.s Thank you so much for helping us and giving us the time to write you tube comments

[@whoboughtthenoodles]

yo your enunciation is impeccable

[@GuineaPigLuna]

God bless you, my guy! Maybe now I actually won't fail my chem exam tomorrow

[@esmfamil5086]

My prof just posted 3 hours of lecture trying to explain this. Some people shouldn't be teachers smh. Thanks prof Dave!.

[@djchemtalk2946]

Excellent teaching..thx sir

[@noone7692]

Good video helps me Understand Chemistry

[@TheObsesionOtaku]

i`ve being figthing against this concept for ages and now i understand omg

[@fatimainigo25]

You are AMAZING!!!!! Thank you very much, Dave

[@kaaarunya_]

2:30 how are they enantiomers?

[@0808J-l9r]

Wow, thanks a lot about your explantation! It's really clear!!!

[@captainclown2718]

Great Video but I feel it should be mentioned that the chemical shifts described in the video are only correct for achiral solvens. In chiral solvens Enantiotopic groups will also have a diffrent chemical shift.

[@vexeddragoon9193]

Prof dave is my savior

[@hek9525]

you saved my life dave

[@diegoorellana7322]

NOWWWW I GET IT

[@PunmasterSTP]

Diastereotopic? More like "Dang good information about a tough topic!" Thank you so much for sharing.

[@ssowmiya2364]

I Like your Hairstyle It's cool🎉

[@rohitdutta7625]

Thank you so much Sir.🙏

[@carolinedeasy8624]

Is this correct: homotopic if no original chiral center and no new chiral center created when switching one of the hydrogens for a variable group, enantiotopic if no original chiral center but a new chiral center is created through replacement test, and diasteriotopic if there was original chiral center and doing the replacement test yields a new chiral center? and homotopic if there was an original chiral center but no new chiral center is created through replacement?

[@hala8592]

THX u so much u explain better than my teacher 😂🙏🏻🙏🏻

[@krishsamanta]

Nice sir I really happy

[@indirapandey265]

Can you please make content in Hoye’s method.

[@khairepayet8094]

This lesson very important

[@missnaturelover3937]

Thank you for this video.

[@rutha2510]

im scared by how little this made sense why can't I just get this Jesus :(

[@guzmanvierareynaisabel6225]

Me ha salvado!

[@andrewr4792]

thank you for the help.

[@nicolefurlan6224]

Ah it makes sense now!!

[@sudheer2643]

Thank you very much sir

[@MrTVx99]

Nice, my professor did not explain it this well

[@sssuhara8561]

Thank u sir

[@OMGshinyobject]

Im not sure if i just missed it but you should say that if a CH2 lies on a C2 axis they are also homotopic

[@na-chan163]

what will happen if there's a carbon carbon double bond? For example, 2-methyl-2-butene.. an example in our book says that changing the H (on the methyl groups) make them diasterotopic.

[@na-chan163]

The molecule have no chirality center initially right? I dont get it T_T does it have something to do with E and Z?

[@saiprasadamanikonda7530]

Amazing explanation!!!

[@davidbowler4177]

The only difference between diastarotopic vs. enatiotopic is that diastarotopic has 2 chiral centers.

[@hej2800]

Thank you for your amazing explanation of the principles! In the example, however, I didn't quite understand how it is that the two pairs of H below the keto group are diastereotopic. is the one meta to the keto group diastereotopic because of the relative positioning to the lone H at the bridge head? is the one ortho to the keto group also related to the lone H? or some other location? I hope you see my question!

[@Patrick-gw1vp]

There is an existing chiral centre in the molecule. Changing any of those pairs of protons you are asking about will introduce a new chiral centre and therefore a diastereomer. As a result, they are diastereotopic protons.

[@israelrobinson7504]

What if something becomes a diastereogmer after you do the replacement test? Something such as a cyclic structure.

[@johnnyboi2481]

THanks :-]

[@esmahi2809]

Super

[@victoriadeery2081]

support patreon. thanks prof Dave

[@sabahrashid3174]

I am interested to watch, read and to calculate chemistry lessons thanks

[@kellygiles6217]

Love you

[@RakeshSingh-tm5wp]

Give advanced organic problem for iit exam

[@2plus254]

Why do colleges hire teachers that are smart but can't explain for shit

[@danielmahmoudi6731]

here I am once again for 2nd semester ochem lol.

[@ZahraAminelahi]

ترجمه فارسی نداره؟

[@ZahraAminelahi]

B

[@abdiraxiindaahir9855]

I am not see clearly

[@harshdeepsingh5427]

increase your vedio quality ..... veiwing it in lowest quality possily will not help bud.

[@abdiraxiindaahir9855]

Be first

[@muazsaiyed6035]

Ochem Jesus

[@zekken8227]

:)

[@Sakuya727]

good vid, but your intro is so cringe dude, uggh

[@ProfessorDaveExplains]

Says you.