Diels-Alder Cycloaddition

[@ProfessorDaveExplains]

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[@emokid2448]

This is great! Thanks for including the MO and explaining EVERYTHING to do with it instead of just the mechanism; it was so helpful.

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He knows a lot about the science stuff. Professor Dave explains! wohoo

[@moniquelauren99]

PROFESSOR DAVE YOU'RE AWESOME! my professor at Colorado State tries explaining everything with resonance and partial charges but you made this so much simpler and comprehensive! READY TO CRUSH MY O CHEM FINAL. !!!!!! THANK YOU

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I´m so glad I found your channel. If you ever want to come and teach Chemistry in Costa Rica I´ll find a way to get rid of my crappy professor and you can fill the spot. Thank you so much for making the video! I have a presentation tomorrow on Diels Alder Cycloaddition and I´m sure with your help I´m gonna rock :)

[@ProfessorDaveExplains]

thanks for watching! i would love to travel and give talks and review sessions so let me know if that's something your university would be interested in arranging!

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Hey Professor Dave! I´ll email you so we can discuss the possibility. I would be very happy to show you my country.

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I sudy molecular Biomedicine in Germany and your Vides help me so much!! Thanks alot.

[@dkastner]

You are the best Organic Chemistry teacher on the internet, literally! I just wanted you to know. Anyways, I would also like to see a video explaining the MO theory a little more, but extremely well done:) Thanks!

[@ProfessorDaveExplains]

+david kastner thanks for the kind words! i am going to do more organic topics soon so i will add it to the list!

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Its video is the first i have seen by the Professor Dave, and i have to say... The intro is so precious for this dirty world! \°~°/

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There is always a video, that can teach everything in 5 minutes. Thank you.

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Thank you so much! I learned more in about 9 mins than I did in an hour of my orgo chem class :D

[@dcansugurer]

Thank you very much for this professor! I've been trying to understand the stereochemistry of this reaction for months and now everything is clear thanks to you!

[@orangesharpy]

Thanks Dave! your explanations are really really good.

[@brim3384]

Its that time of the year!!! Appreciate the videos... You're an absolute lifesaver

[@Paraselene_Tao]

Wow. We didn't go over this is a college level o-chem class, but it's very cool. Thank you.

[@hamadkadventures5358]

Thank you professor Dave, that was an amazing explanation. :)

[@ishagaur668]

I'm from India and i loved the way u explain thank u so much for this

[@8josyjos844]

So nicely organized and easy to understand! Thanks! =)

[@cheyneycarter9731]

I have seen this done with the diene being labeled 1-4 and the dienophile being labeled A & B, it creates less confusion on big rings. Thanks for your videos!

[@valeriesworld2609]

You are very intelligent and great at explaining these concepts! Thanks!

[@larissafresen2216]

Thank you from Brazil!

[@TomMinnow]

My O-chem book butchered and overcomplicated it's explanation of endo and exo. THANK YOU for knowing exactly how to explain it. I want to find whoever made my book and fight them. 2 pages! TWO FULL PAGES to explain endo and exo. Listen to this "In the Endo approach, the dienophile aligns with its electron withdrawing group substituent underneath the pi system or directly above it. When it reacts such that the pi electron orbitals of its electron withdrawing group align under (or above) the pi orbitals of the diene, the orientation of approach is called endo." and it carries on like this

[@ליסג]

Dave, thanks so much! finally getting this!

[@mattlarsen8585]

Holy shit. You explained this so much better than my professor.

[@besma2627]

These dienes had me dyin 😂😂

[@vaishnavisharma9467]

you are an amazing teacher. love your videos

[@meaghan4875]

Love watching your channel! Thank you so much :)

[@adriansamler2600]

Another great video PD!

[@strpwns800]

Finally a video with a cyclic diene and dienophile

[@ranyoon2944]

thank you for the clear explanation! So helpful :)

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thank you so much for all your videos!!!! ❤️

[@ahmedfouad9595]

Good explanation professor

[@balaajisrin.k9365]

sir thank u for the tutorial and i am a high school student from India check out organic chemistry questions on IITJEE question paper.I learn a lot watching your videos...

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Indians not needed here....he we are the ones who love the subject than memorising....

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it is very helpful for me...thank you professor

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Thank you! You saved my life with this video!

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teaching style...perfect 👍

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thank you so much. This channel help me a lot.

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This is beautiful.

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Thank you so much, professor. Your videos save my life.

[@reetichauhan355]

Not even in my syllabus! But that was fun to learn. Thanks! 😁

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Thank you very Mach professor ❤️💕😊

[@bic1349]

YOU ARE AMAZING!!!

[@davidmastrippolito8972]

it should be known that the first two reactions shown would not actually work, unless under extreme conditions due to the diene and dienophile both having high electron density. An electron withdrawing group should be attached to on or the other.

[@davidmastrippolito8972]

also at the end of the video there were no electron withdrawing groups and this topic was not discussed even though it is extremely important to the reaction. The interaction between the forming pi bonds and the electron withdrawing group on the othe molecule is the reason that most reactions do proceed in an endo approach and is known as the endo rule. a great example of this is the reaction between anthracene and diethyl fumarate were these pi bond, EWG interactions actually determine regiospecificity of the product.

[@ProfessorDaveExplains]

+david mastrippolito butadiene and ethene will go with some heat! but yes, it's true that withdrawing and donating groups are important to the kinetics of the reaction.

[@nafeesasarfraz5575]

Thanks a lot sir. I had a lot of problems regarding this topic. Can u please explain reaction between maleic anhydride and cyclopentadiene according to woodward hoffman rule and FMO. And please also explain woodward hoffman rule in a seperate lecture.

[@Cheesecow29]

Thanks Dave!

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thanks dave

[@colbymchenry]

Great video.

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Thanks sir good explanation

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Thank you Chemistry Jesus!

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[@kavyanayaker9725]

finally ..... got it .... thanks a lot ..

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Absolute hero!

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Thx to you i finally understand chemistry, as a chemistry student lol

[@andy0695]

Ur in which university??

[@sarahm7286]

@@andy0695 cologne, Germany :)

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organics is killing me but you help me survive

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ur great rly. that helped me alot:*

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Dear prof..i am having a problem with one of the questions asked in a competitive exam..but its image based..can you help?

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THANK YOU!!!!!

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Just awesome :)

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Thanks!!!

[@warlord9626]

What is endo rule for (4+2) cycle explain with example sir please..

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making my first ever youtube comment on a video to say youre amazing

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thank you lot

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Helps somewhat... still so difficult to picture sometimes though

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Why don't I get professors like u in my college 😞

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thank you...

[@vineshravindran9208]

Is there any catalyst involved in all these rxn? and what is the name of the dienophile, and the product?

[@ProfessorDaveExplains]

nope, none! you just put them together and it goes. sometimes you need a little heat but that's not a catalyst. the dienophile could be a variety of molecules, as can the product.

[@vineshravindran9208]

Professor Dave Explains Thank you sir!

[@rassimsimou1594]

Good

[@pascalkoch953]

on your second example didn't you draw the exo reaktion but the endo product?

[@ProfessorDaveExplains]

hmm at what time stamp? exo/endo only applies when the dienophile has a structure that can extend either under the diene or away from the diene

[@pascalkoch953]

at around 5:40

[@liambuchan4162]

@@pascalkoch953 You cannot tell if it is the endo or exo product unless you draw in the hydrogen atoms where the 2 rings connect.

[@subhabrataghosh3565]

Oh thanks professor dave.......:)

[@danielohearn5408]

How does one convert benzene to diene's and dienophiles?

[@ShahinAhmed-tl7tw]

love it

[@حجزفندقنقلباص]

thanx

[@karenopt]

Dienes must be in what particular geometry?

[@ProfessorDaveExplains]

s-cis

[@kusaluzumaki7730]

A good one

[@balaajisrin.k9365]

Sir,do we need any reagents for diels alder cyclo addition??

[@ProfessorDaveExplains]

not really, just the diene and dienophile! sometimes the reaction mixture needs to be heated considerably, depending on the favorability of the particular reaction.

[@balaajisrin.k9365]

thank u sir

[@Anuj-tiwari]

Sir I want to know about reactivity of dienes when EWG or ERG is present across the double bond of dienes.

[@ProfessorDaveExplains]

depends on whether it's reacting with a nucleophile or electrophile!

[@Anuj-tiwari]

Professor Dave Explains if the reaction happens with dienophile only

[@ProfessorDaveExplains]

oh right this is on Diels Alder, i didn't check the context. as far as i'm aware the rate only increases if there is one of each present

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u the real nigga dave

[@UbaidUllah-mu3rj]

hi.sir I want to know. steriochemistry especially confermers

[@ProfessorDaveExplains]

+ubaid ullah i've got tutorials on that, check them out!

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this is whats up

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i love you

[@nourel-houdadegachi3673]

What is the difference between thermal and photochemical reaction

[@ProfessorDaveExplains]

thermal = heat, photo = light!

[@nourel-houdadegachi3673]

I know this .... but when we say it is thermal or light reaction possible or not possible Or what is the difference in terms of mechanism

[@nourel-houdadegachi3673]

I mean..thermal and photochemical cycloaddition reaction

[@ProfessorDaveExplains]

yeesh i forget, probably has something to do with alignment of orbitals, the p orbitals that overlap have to be in phase with one another, when the diene and dienophile approach each other. with the light stuff, usually a photon excites an electron to a higher orbital and that affects which one is the HOMO and which is the LUMO, i'd have to dig into some old stuff to remember exactly

[@nourel-houdadegachi3673]

Okay, thank you very much for your response

[@manmeetkundal4879]

anthracene + ethene → ?? in diels alder reaction please answer tq

[@ProfessorDaveExplains]

+Manmeet Kundal just take four carbons from the edge of the anthracene (diene) and make a new six membered ring with ethene (dienophile), you'll get a bicyclic structure.

[@manmeetkundal4879]

Can ethene react with the 2nd ring of anthracene to form the ring?

[@ProfessorDaveExplains]

+Manmeet Kundal actually it seems like it is exclusively the middle ring that reacts.

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+Professor Dave Explains thank u sir i am a high school student in India , check out the IITJEE exam chemistry paper

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Feels great to understand it all , from Jesus (PBUH) himself

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why is there a red star?

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The shirt looked pretty bare, I thought I'd decorate it.

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I derive all of my power from my chest hair, so unfortunately I can't comply with this request.

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oh, it does.

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اريد ترجمه بالعربي

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All subtitles are submitted by viewers, feel free to add Arabic subtitles to any video!

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