Hydrohalogenation - Alkene Reaction Mechanism

This organic chemistry video tutorial provides a basic introduction into hydrohalogenation of alkenes. It provides the reaction mechanism as well. Examples include carbocation rearrangements such as hydride shifts, methyl shifts, and the stereochemistry of the products are mentioned as well.
Alkene Reaction - Stereochemistry Test Question:
• Meso Compounds, Enanti...
Simmons Smith Reaction Test Question:
• Cyclopropane Ring Form...
Syn Vs Anti Addition Test Question:
• Anti Addition vs Syn A...
Alkene Epoxidation Test Question:
• Halohydrin Formation a...
Alkoxymercuration Demercuration Test Question:
• Alkene + Hg(OAc)2 - Al...
Ozonolysis Test Question:
• Oxidative Cleavage of ...
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Stereochemistry R/S Configuration:
• Stereochemistry - R S ...
Optical Activity & Specific Rotation:
• Optical Activity - Spe...
SN1, SN2, E1, E2 Reaction Mechanisms:
• SN2 SN1 E1 E2 Reaction...
SN1, SN2, E1, E2 - Practice Test:
• SN1 SN2 E1 E2 Reaction...
Alkene Reactions Review:
• Alkene Reactions
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Alkyne Reactions Review:
• Alkyne Reactions
Organic Chemistry PDF Worksheets:
www.video-tuto...
Organic Chemistry 1 Exam 2 Playlist:
bit.ly/3PKEApB
Organic Chemistry 1 Final Exam Review:
• Organic Chemistry 1 Fi...
Full-Length Videos and Worksheets:
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Full-Length Exams and Worksheets: www.patreon.com/MathScienceTutor/collections
Next Video: ruclips.net/video/6O-xSRC5Wg8/видео.html
Alkene Reactions: ruclips.net/video/lKROX1C0JRs/видео.html

[@ingridd7111]

I think at 9:52, we have a primary carbon and a tertiary carbon. Thank you so much for making these videos. They have been saving me.

[@Bofadeez467]

yeah you're right

[@兔子和花椰菜]

totally agree, but its ok, he is legend

[@tomatrix7525]

I like the explanations. My teacher just explains this as ‘ok so simply, hydrogen attaches to end breaking the double bond, carbocation in middle, that bonds with negative bromine. Done , easy see...’ and that’s her done...

[@maiwanmussa1238]

I credit my Ochem success this semester to your videos. THANK YOU!

[@lebronjames5176]

My professor had to go through multiple examples and I was still confused at the end. I watch your 12 minute videos and understand everything I should know by now. Thanks 🙏🏼

[@saliksyd4714]

God bless you.

[@Ralovelyb]

Do I understand this video? Hell yeah
Does my teacher teach to make me understand? NaBro

[@jcmick8430]

XD

[@Dr.ben.nutrition]

him not explaning it properly dosen't mean he dont want you to understand, that's kinda mean.

[@gaurishbhatia7010]

@@Dr.ben.nutrition a😂ap😂😂

[@sambrailsford3800]

At 9:50 you label a carbon that's connected to three other carbons as secondary carbon. Shouldn't it be a tertiary carbon?

[@ethanlittlestone1122]

yes

[@janichka95]

@@ethanlittlestone1122 No, double bonds cannot be classified.

[@raeanne5793]

@shyl venk he did in the example prior..if you "cant consider the carbon attached to double bond", then the last example would only have primary carbocations sooo

[@someone-yj2im]

@@raeanne5793 So is it actually tertiary carbon or second?? Can you explain?

[@raeanne5793]

@@someone-yj2im it would be a tertiary carbon, I believe he just made a mistake in the video. It is a tertiary carbon because when the electrons from the double bond attacks the H-Br, that double bond goes away and you are left with two possible carbocations. I think viewing the skeletal structure makes it easier to see this so I linked the google doc I created that shows you. here is the link: docs.google.com/document/d/1QXvka44V0s5bEpC-orfS9ECNug5IbPx2CXonhBiCBzE/edit?usp=sharing
Carbocation #1 in the google doc shows that it is a tertiary carbon, and Carbocation #2 is a primary carbon. Let me know if this helped, or if you need it explained differently! (:

[@RawDoggin_78]

you are my saviour

[@sofzhuk1188]

ahh yes, here I am again, after attending lecture and reading my book and still not understanding :)

[@prestonemulala7645]

How do you determine the major product for the Alkene where the both carbons in the double bond are secondary carbons.

[@alvarez321]

Ahhh, ok....I still don't get it

[@eliyahbohadana3172]

In the second reaction, correct me if I’m wrong but it isn’t you major product because u had to do a hydride shift

[@britneymack8664]

Shouldn't that be a tertiary carbon instead of a secondary carbon in the last example?

[@sanchez5963]

You helped me through out hard times please don’t ignore me and respond it I’ll mean much more than a reply to me.

[@prestonemulala7645]

Dwell much on explaining how oxygen stabilizes the primary carbocation

[@Shahboyy]

8:12 its actually 2-bromoPENtane

[@amnalayth1841]

thank you very much ✌

[@夸父逐日-i2p]

In last example for HBr, there is 3rd carbonation, and a primary one, there is no 2ndery carbonation in the question, while you keep say 2nd ....

[@frukten7020]

For the last question wouldn't we have a racemic mixture because the carbon is Sp3 hybridized and connected to 4 different things

[@jaquelinerios2740]

What's an MTP orbital?

[@nourelshabassy8158]

Jaqueline Rios you heard a little wrong;
it’s an empty ‘p’ orbital

[@anilkumarsharma8901]

Gannaa key rus ko khumbhi sey sadao to kya methane nahin ban jayegi??? Hydrogen mix karo kuch ghee jaise ban jayegi😇😇😇😇

[@karanghuman3336]

Thank you for being helpful but do you have any videos on general organic chemistry reactions? I'm in first year Chemistry.

[@talyaxagh5291]

When do we perform hydrogen shift and when do we do methyl shift?

[@amacgregor92]

Anyone know what application he uses to draw?

[@olamideajayi247]

How do i identify the secondary carbon and the primary carbon?

[@alhassanmichael306]

👏👏👏👏am crazy about you!!

[@aasdfk14]

I LOVE YOU

[@JayPatel-ql1pj]

Is there a chiral center on the last example, resulting in racemic enantiomers?

[@janeb9986]

What are the products formed when Bromine Water reacts with 2-methylpropene ?

[@NguyenNhan-yk3sr]

I think besides the hydrobromination,the alkene also undergo a reaction with the hydroxyl group,forming pentanol as well.

[@ArshSahu]

When alkene react with bromine water anti addition takes place and it proceeds though cyclic transition state

[@huxiao4656]

Going to National sains competition

[@Andrew-kh7rz]

11:53 isn't that tertiary?

[@adityaanand2621]

Yes, I think he made a mistake there

[@strugglingcollegestudent]

6:22 how did you know the structure switched like that

[@jessiez2807]

Why doesn't Br ever make a bond that's in the plane of the page: why is it always either dashed or wedged?

[@werewolwolf]

Csp3 is planar, the P orbitals are the only ones which can react, so it goes either up or down

[@sphanie]

why is the major structure more stable?

[@ArshSahu]

Why are you ignoring hyperconjugation effect

[@MissPhilemon]

I’m cooked bro

[@CANALIMG]

We're all Cooked

[@adhitya3573]

wbat if HBR is in excess

[@siobhanquinn4635]

a what kind of mixture? receding????

[@TungstenWu]

Racemic

[@cilened.s1788]

Is that Br going to have and enantiomer since theres a chiral center

[@EllieStanek]

that was also my question

[@gowthamthevipre2609]

this nothing but carbocatiom rearangement mechanism

[@captaingovind5983]

Nabro