Intro to Reaction Mechanisms: Crash Course Organic Chemistry #13

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  • Опубликовано: 23 янв 2025

Комментарии • 106

  • @MoMn.
    @MoMn. 4 года назад +239

    Production values are exceptional. Huge respect to your awesome animators

  • @drakesmith471
    @drakesmith471 4 года назад +361

    To anyone who hasn’t studied Organic Chemistry a bit, forewarning it’ll be bad at first, but it will get better. Mostly I mean reaction mechanisms here but in general. You’ll feel more satisfied and more motivated the more you go on.

  • @jamaiya7
    @jamaiya7 4 года назад +735

    this is where o-chem all went downhill for me 🥴

  • @ishikasingh9254
    @ishikasingh9254 4 года назад +35

    You guys, seriously, LIVE SAVIOURS. My organic chemistry course is starting next week. Can you imagine my sheer relief at seeing this course on ur channel? Thanks!

  • @marinabarros1721
    @marinabarros1721 4 года назад +72

    omg you're such a good teacher. I've already had all my org chem classes and I still don't understand a lot of the basic stuff. My teachers actually didn't bother to teach us this :/

  • @terrabelle9937
    @terrabelle9937 Год назад +7

    So, so grateful for the people at Crash Course.

  • @mathfincoding
    @mathfincoding 4 года назад +160

    I lost track of what's happening 10 episodes ago. This isn't even my major. I don't know why I'm still watching 😂

    • @alic4631
      @alic4631 4 года назад +52

      Well this is major and i lost track too 😂

  • @iamadarshamrit
    @iamadarshamrit 4 года назад +12

    This channel is a savior when
    It comes to reviewing for my exams.

  • @firefx963
    @firefx963 4 года назад +76

    I just can't take my eyes off of the background colors matching in yellow.. 😂

  • @zulanova1209
    @zulanova1209 Год назад +8

    FINALLY, I GET IT
    thank you ever so much that was a wonderful and clear explanation, and the visuals really helped

  • @abhi-wi2mj
    @abhi-wi2mj 4 года назад +4

    i love mechanisms , its so logical and fun

  • @cnc321
    @cnc321 4 года назад +16

    You are AMAZING! I'm taking Ochem 2 and this is such a helpful refresher for the small details

  • @user-ue6rk9by1j
    @user-ue6rk9by1j 4 года назад +7

    Just in time for my quiz later. Thank you.

  • @benjaminstandefer9015
    @benjaminstandefer9015 4 года назад +15

    Thank you for the video. Have you ever considered creating a course oriented more towards mathematics? I am an avid fan of your videos, but often have to turn to other resources for mathematical help.

    • @crashcourse
      @crashcourse  4 года назад +26

      Math is definitely a tricky one for us. We've made a couple attempts - Statistics here on this channel & this summer we did Alegbra with ASU. But who knows, maybe down the line we'll try other math coures!
      -NS

  • @henryelicker2403
    @henryelicker2403 4 года назад +44

    I wonder what the mechanism is for "Turn the O2 into the O3, dawg".

    • @mortuos557
      @mortuos557 4 года назад

      Google the Chapman cycle!

  • @kcvikram2219
    @kcvikram2219 Год назад +3

    Great teacher ❤

  • @snowballeffect7812
    @snowballeffect7812 4 года назад +8

    This is such an excellent educational tool.

  • @Dmplivemail
    @Dmplivemail 4 года назад +25

    It would be so great if after this classes we had some exercises...

    • @gg3675
      @gg3675 4 года назад +6

      If you download the app they have some "notecards" that I've actually found very helpful.

  • @harshgumma8074
    @harshgumma8074 Год назад +2

    I have a question:
    According to the reaction mechanism isn’t the reverse reaction also possible for all reactions
    Take benzyl chloride for example. We can draw a reaction mechanism for the given reaction
    C6H5CH2Cl + H2O = C6H5CH2OH + HCl
    But we can also do the same for the reverse reaction which is not possible in real life.
    So how do we know if the given reaction mechanism will actually happen?

  • @jacobkelly677
    @jacobkelly677 2 года назад +3

    Why doesn't the HSO4 negative charge attack the carbocation more readily than the water? Steric hinderance?

  • @SciFactsYT118
    @SciFactsYT118 4 года назад +86

    Random fact:
    Blue whale tongues can weigh as much as an elephant.

    • @Hambxne
      @Hambxne 4 года назад +3

      When it comes to pee production, whales are world champs. A single fin whale is thought to produce around 1,000 liters (260 gallons) of urine each day - enough to fill a 10-by-6-foot kiddie pool.

    • @lycaonpictus4433
      @lycaonpictus4433 4 года назад +7

      @@Hambxne and i would like to add ...
      And all the water they get is from their food they can't drink sea water
      So it means if they starve they also are dehydrated
      Edit: some species of whales will not eat seasonally , they get the water from their fat stores/blubber
      When you burn fat you get energy
      Which gets converted to heat , co² , and water .

  • @believer922
    @believer922 4 года назад +3

    Wow 🤩😲very informative video!!!!

  • @anjanaprabhash.z3031
    @anjanaprabhash.z3031 Год назад +1

    Thanks now I get it

  • @jennadodge6924
    @jennadodge6924 2 года назад +3

    I got most of it but what happened to the HSO4? Why was it not added to the reaction

  • @abhi-wi2mj
    @abhi-wi2mj 4 года назад

    i love you crash course💚

  • @bizzarex5275
    @bizzarex5275 4 года назад +1

    Thanks for uploading new video.

  • @nadyahginicecaballero7185
    @nadyahginicecaballero7185 4 года назад +1

    just in time for my orgchem quiz this friday

  • @onelittlestep88
    @onelittlestep88 4 года назад

    Thank you Crash Course, you give me something new in this video. XD

  • @DailyDoseDocumentary
    @DailyDoseDocumentary 4 года назад +1

    Nice piece.

    • @DailyDoseDocumentary
      @DailyDoseDocumentary 4 года назад

      Great explanation of Reaction Mechanisms.

    • @DailyDoseDocumentary
      @DailyDoseDocumentary 4 года назад

      @@FlamingBasketballClub We publish short documentary-style films usually 3-minutes or less Monday - Friday!

  • @whengale
    @whengale 2 года назад +2

    The acetylide salt + cyclohexanol reaction is probably occurring in aqueous solution, otherwise the salt wouldn't dissociate, right? So why doesn't the acetylide ion attack the protons in the H2O molecules instead? Is it because the carbonyl's δ+ carbon atom is somehow more electrophilic than the hydrogen atoms in the water? The bonds in water have an electronegativity difference of ~1.2, and the carbonyl double-bond has an electronegativity difference of ~1. So why is it that, in this reaction, water's protons are less attractive to the acetylide ions than the electrophilic carbon in cyclohexanone?

    • @whengale
      @whengale 2 года назад

      I understand that water is formally excluded from the first step in the reaction & that this is just a pedagogical proof of concept, but in a real situation, how would I be able to *predict* that the acetylide would attack the δ+ carbon atom instead of one of the *more* δ+ protons in H2O?

    • @whengale
      @whengale 2 года назад

      ok I just read on Wikipedia that the reaction is usually done in liquid ammonia, which is a nucleophile & so would not be attacked by the acetylide. I guess I answered my own question lol.

  • @Rahulshorts124
    @Rahulshorts124 4 года назад +2

    Thanks so much

  • @mark_tilltill6664
    @mark_tilltill6664 4 года назад

    Really like arrow pushing!

  • @franck1919
    @franck1919 4 года назад +4

    11:45 I loved the phrase "Don't panic" that makes me remember the cover of Hitchhiker guide to the galaxy book. Like if you read that awesome book. Nice content. Leave my like.

  • @5ive8ight
    @5ive8ight 4 года назад +17

    To the person that’s reading this:
    You’re very intelligent and adorable human!
    Stay healthy during quarantine
    My Dream is to have 70k. I been struggling to get there💚

  • @aceroro21
    @aceroro21 2 года назад +2

    why is water still floating? i’ve never been able to grasp why it is still there

  • @sillypoint2292
    @sillypoint2292 4 года назад +3

    I really love organic a lot😘🥰😍

  • @sillypoint2292
    @sillypoint2292 4 года назад +1

    Hey are u from India? I'm from India! Love u guys!

  • @benscrafield9575
    @benscrafield9575 4 года назад +4

    A few misleading things in this video. First of all a lot of the structures are not great: molecular geometries were wrong for sulfuric acid and H3O+, and there’s the tendency to show square-planar-type structures for organic molecules - obviously people do this for the purpose of teaching, but then when you want to show a mechanism, e.g. an elimination, you need to introduce another method of representation for it to make sense. Speaking of which, the reversible hydration/dehydration would surely give the E alkene as the major alkene component, very quickly. As presented in the video, it makes it look like you would have a mixture of the Z alkene and the alcohol, which effectively would not be true. Also the reference to pKa was quite odd: why state that the protonated alcohol has a low pKa if it’s not going to be compared to H3O+ in the forward direction?

  • @QuestionEverythingButWHY
    @QuestionEverythingButWHY 4 года назад +4

    “The mind is not a vessel to be filled, but a fire to be kindled.”
    ― Plutarch

  • @BassikMusic
    @BassikMusic 4 года назад +4

    Ah, the things nightmares are made of

  • @erinaldrich8016
    @erinaldrich8016 4 года назад

    When can we expect more episodes?

  • @wada-wada
    @wada-wada 4 года назад

    why do you input an empty line before every line of your subtitles?

  • @ramjayadeepb6861
    @ramjayadeepb6861 4 года назад +24

    Corona:"I spread fast"
    Me: "not faster than crash course views"😎

    • @prem5176
      @prem5176 4 года назад +2

      Mmmm, no there are many other channels get more views in less time

    • @ramjayadeepb6861
      @ramjayadeepb6861 4 года назад +1

      @@prem5176 yup

  • @alexisperry4555
    @alexisperry4555 Год назад

    Wish I had this for orgo 1. I barely passed with a B but im stuck in orgo 2
    Thanks

  • @getrektfn5725
    @getrektfn5725 4 года назад +23

    “Who else is reading comments and not watching in full screen?😂”
    *(Hey CrashCourse thanks for commenting on my new video)❤️*

  • @ajay-vlogger
    @ajay-vlogger 4 года назад

    I can't stop hearing her name again and again. Nice name.

  • @Charissa0248
    @Charissa0248 4 месяца назад

    I wish I found this channel sooner

  • @firstmkb
    @firstmkb 4 года назад

    Excellent presentation, thanks.

  • @manaswikumar4969
    @manaswikumar4969 2 года назад

    That warning sign was scary

  • @margaretgodfrey9946
    @margaretgodfrey9946 4 года назад +1

    They use my own professor's book for the videos so this really works for my class

  • @ajay-vlogger
    @ajay-vlogger 4 года назад

    Ohhhhhhhhhhhhh !!!!! 16th comment I love CrashCourse.

  • @ivanmayerle1333
    @ivanmayerle1333 4 года назад

    Soooo gooood! Can you show us elimination of N2 form amines (by HNO2) . I thinks that it s very interesting reaction. Good luck

  • @afrnn
    @afrnn Год назад +4

    cant understand a thing 😭😭

  • @QuestionEverythingButWHY
    @QuestionEverythingButWHY 4 года назад +6

    "Be less curious about people and more curious about ideas."
    -- Marie Curie

  • @vaughnjohnson8767
    @vaughnjohnson8767 4 года назад +3

    Organic Chemistry explained by Marvel:
    Chemistry: Nucleophilic War
    Chemistry: Endgame

  • @benrobinett3396
    @benrobinett3396 4 года назад +1

    Idk if I’ve ever been this early

  • @QuestionEverythingButWHY
    @QuestionEverythingButWHY 4 года назад +5

    “Wonder is the seed of knowledge”
    ― Francis Bacon

  • @culwin
    @culwin 4 года назад +2

    Most people driving don't seem to know what a Yield sign means.

  • @emacuhara5635
    @emacuhara5635 4 года назад

    Yay, app!

  • @sarthakpeepra3748
    @sarthakpeepra3748 4 года назад

    can i get a shout out?

  • @jorgeherrera-uo2pr
    @jorgeherrera-uo2pr 4 года назад +2

    Diversity!!!! In your hosts we love to see it!!!

  • @haileyhua4468
    @haileyhua4468 4 года назад +8

    I hate school

  • @JS-vv3mo
    @JS-vv3mo 4 года назад

    in the next video,deboki di plz try to explain the diff. btw inductive ,electromeric,mesomeric n hyperconjugation....really it ll help me a lot...🙏

  • @angusjulie9701
    @angusjulie9701 4 года назад +3

    When will crash course Asian and African history come.

  • @nooraoude1000
    @nooraoude1000 2 года назад +1

    she looks like camilla cabello

  • @ZubairAli-ns7vr
    @ZubairAli-ns7vr 4 года назад

    👍👍👍👍👍👍👍👍👍👍

  • @brynwhitehead1731
    @brynwhitehead1731 4 года назад

    Hot Mic.
    So, to the business of business.

  • @sebfetea3408
    @sebfetea3408 4 года назад

    I am an unreactive mechanism

  • @mariemartinez7121
    @mariemartinez7121 4 года назад

    Me watching their videos from 2013...

  • @karlbergen6826
    @karlbergen6826 4 года назад

    Organic reactions tend to proceed to give multiple products. Usually one of.the products is a polymeric material often called tar.

  • @patrickpowell601
    @patrickpowell601 4 года назад +2

    When did science look so damn good 🤤

  • @aryansingh7209
    @aryansingh7209 Год назад

    When your organic chem teacher doesn't teach you properly!

  • @youre_totally_right_but_
    @youre_totally_right_but_ 4 года назад +1

    27 seconds gang

  • @Syncronicity888
    @Syncronicity888 Год назад

    Way over my simple mind.

  • @traceycook7136
    @traceycook7136 4 года назад +1

    I thought I was going to finally learn how to drive uggg...

  • @justinanderson267
    @justinanderson267 4 года назад

    Oy
    You lost me at electrophilic additions of a protein to an alkaline.
    I need to go back over my high school chemistry lol

  • @TheKilerbg
    @TheKilerbg 4 года назад

    Early birds post the first comments

  • @andrewt15
    @andrewt15 4 года назад

    Dope

  • @abdullahmusa9547
    @abdullahmusa9547 4 года назад

    Almost First

  • @beepk9228
    @beepk9228 4 года назад

    Can you guys please bring back Human Geography T_T

  • @chrisfit
    @chrisfit 4 года назад +3

    So tired of reaction videos.

  • @Spit823
    @Spit823 4 года назад +2

    The real life map analogy is so unnecessary. Can’t we just get to the point?

  • @ZelenoJabko
    @ZelenoJabko 4 года назад +1

    Sorry, you are what?

  • @AInova.2
    @AInova.2 4 года назад +1

    Focus on the problem rather focusing on theories in organic chemistry .we need much practice to familiar with OC.