Alkene Reaction Shortcuts and Products Overview by Leah Fisch

leah4sci.com/alkene-reactions presents: 18 alkene reactions in 15 minutes - a thorough overview of alkene reaction products including regioselectivity and stereoselectivity of products - Syn/Anti additions as well as Markovnikov and Anti-Markovnikov Products.
Need help with orgo? Download my free guide '10 Secrets to Acing Organic Chemistry' HERE: leah4sci.com/orgo-ebook/
This video is a review of my alkene reaction cheat sheet study guide. Download your copy here: leah4sci.com/alkene-reactions-...
You can also learn the individual alkene reaction mechanisms in my alkene reaction series here: leah4sci.com/alkene-reactions
Watch Next: Cyclopropanation of Alkenes • Cyclopropanation of Al...
For more in-depth review including practice problems and explanations, check out my online membership site: studyhall.leah4sci.com/join
For private online tutoring visit my website: leah4sci.com/organic-chemistry...
Finally, for questions and comments, find me on social media here:
Facebook: / leah4sci
Twitter: / leah4sci
Google+ plus.google.com/u/0/+LeahFisch
Pinterest: / leah4sci

[@J-Heme]

Great video explaining these reactions! My professor tends to lose me by going into too much detail and forgetting that we are not all professionals in OCHEM. This video gives me exactly what I need to know about each reaction in a simplified manner! Thank you!

[@Leah4sci]

So many professors forget that the reason they have students is that it is their job to teach chemistry to those who don't yet know it! I'm glad my videos are able to fill in where your professor is unable to

[@mickikeiser2028]

This was so great! It eliminated the need to review all the videos (that I have already watched several times while learning the concepts), in a compact, "remember these" concepts way. Perfect for day before finals review!

[@Leah4sci]

that was exactly the point! so glad to help Make sure you try the practice quiz once you feel confident with all the reactions

[@musickittylover_292]

This was ABSOLUTELY amazing! Someone in my organic chem group sent this video to the gc and I was happy to watch it! With the situation of COVID my class has been stuck online and it is really hard to understand or ask for help... So, this video really helped out. Thank you!

[@Leah4sci]

Glad it was helpful!

[@AFAQLAMLUM]

Thank you so much Leah, You are amazing. Your videos help a lot to understand the difficult concepts of Organic chemistry. I am watching all of them and this video is a summary for many chapters in my textbook. Thanks again and God bless you, wish you all the best Leah!

[@Leah4sci]

You are very welcome! I'm glad the videos help :)

[@Ishraqwantstochill]

Life changing so far. Thank you so much! I'm surprised you're providing videos of this quality for free.

[@mcmillanbanda6817]

she is doing great, some of us cant afford to pay for you tube videos, for example me, am very poor from the most poor country. so stop influencing her that we should pay for her videos.

[@johnmwenyambewe9985]

@@mcmillanbanda6817 yabva....this comment though....tell them

[@alishas7129]

@@mcmillanbanda6817 what country are you from

[@Leah4sci]

You're very welcome!

[@adf3903]

Thank you so much, our professor started this chapter on the last week of class. By watching this video before every class, it allowed me to get more familiar with the material and gradually add the mechanisms behind the results as they were discussed in class.

[@Leah4sci]

wow! that's good to know! Thanks for following along. Please make sure to subscribe. You're welcome. :)

[@samanthaecotothermia7896]

I know that this is an older video, and I don't know if this channel is really active anymore, but this video is honestly going to be my saving grace for the exam I have tomorrow. Thanks, Leah!!

[@Leah4sci]

Yes, the channel is still active, I just get behind on my replies sometimes. So glad to help you with your exam!

[@johnguillen68]

You are the best. I'm on the chapter of Reactions to Alkenes and it's a huge chapter to read. We have the powerpoint slides but the professor just goes through each slide which makes it hard to understand. Your video pretty much summed up most reactions that we reviewed in class. But now, I have a better understanding.

[@Leah4sci]

That is so nice to hear! Thank you for the feedback. Glad to be of help :)

[@singing.winnie]

Love you Leah thank you so much. You cannot imagine how wonderful your talent is and how helpful you are.

[@Leah4sci]

Aww, thanks! You are so welcome!

[@jonathan88wilhelms]

Thanks for sharing this video! I do appreciate the commitment you have given to creating each video.

[@Leah4sci]

My pleasure! Thank you for the kind words

[@admireurgod]

Thank you Leah for this awesome video and providing the cheat sheet! This is so helpful!

[@Leah4sci]

You're very welcome!

[@s95kth]

Couldn’t believe I just found ur video this is very clear and helpful! I’ve been struggling with the products of these reactions now you’ve cleared my doubts thank you so much

[@Leah4sci]

You're so welcome!

[@sarahjoseph949]

im not kidding when I say you have helped me understand SOO much I cant thank you enough. You make things so much simpler!

[@Leah4sci]

Happy to help!

[@kimdianenocito7174]

Just want to express my appreciation to leah4sci, these videos really help me a lot 😊 you're the best 🤟

[@Leah4sci]

Happy to hear that!

[@sleepy9675]

Honestly never once liked these overview videos but this one is an exception. Amazing explanation and cheat sheet. Truly helpful!

[@Leah4sci]

I'm honored that this video is an exception for you. So glad you gave it a chance and found it helpful.

[@xxJOHNLIKESPIExx]

Thank god you exist, thank you so much!, you explain it so much better than my lecturer.

[@Leah4sci]

You're welcome, happy to clear things up for you!

[@mina23fifi]

Thank you so much Leah!! I'm reviewing for the OAT and these videos for a quick recognition of the reactions is SO helpful!

[@Leah4sci]

You're so welcome!

[@erinschillings]

:)

[@rebeccaly]

thank you for this!! I wish I found it sooner but you're such a lifesaver Leah!

[@Leah4sci]

You're welcome! I'm glad you found my resources!

[@brookegabany5237]

Leah, thank you so much. I've been getting very frustrated and confused in class regarding this information...thank you for bringing me clarity and some peace of mind!

[@habeebanwar9092]

THANK YOU LEAH FISCH........ LOVE U

[@Leah4sci]

Glad my videos were able to clear up your frustrations

[@ianwatosky5481]

i love you. thank you so much. this was so cut and dry and to the point

[@Leah4sci]

I'm glad you like it!

[@bethanyerb9381]

Thank you, Leah! This video is very helpful.

[@Leah4sci]

You're welcome Bethany! Glad to help! :)

[@koran_4e271]

So far this been the hardest topic in orgo1 for me thank you very much

[@Leah4sci]

You're very welcome, glad I could help!

[@sinethembamkhize1780]

Leah can you plz explain the syn and anti addition by using cis and trans or E and Z isomers?1 I don't know how to show these effects!

[@Leah4sci]

I'm planning to do a video on this soon

[@emiliefreymann4996]

Your videos are a lifesaver thank you so much!!❤

[@Leah4sci]

You're so welcome, glad it helped!

[@zaema369]

Thank you for all your help !

[@Leah4sci]

You're welcome, happy to help!

[@udochukwuanwaegbu4956]

Thank you Leah. Your videos are very helpful

[@Leah4sci]

You're so very welcome, happy to help!

[@RichBest8910]

Very good video! straight to the point

[@Leah4sci]

Glad you liked it!

[@TressesBelle]

Thank you! God bless you!

[@Leah4sci]

You're very welcome

[@zerowolf137]

Just the videos I have been looking for!!!🔥🔥🔥😁

[@Leah4sci]

Yay!!! So glad you found them!

[@sierrawolfe3762]

Great video, really helped me realize and remember certain things about each reaction! Thanks!

[@Leah4sci]

That's great! You're welcome Sierra :)

[@miporti]

This was an awesome recap ! thank you

[@Leah4sci]

You're welcome!

[@shridhardodamani7752]

now u are my new organic teacher... thank u

[@Leah4sci]

LOL! Too funny. You are very welcome!

[@AA-kr1ci]

Your vids are some rare gems !

[@Leah4sci]

Aww, thanks for your kind words! I'm so glad you like them!

[@raunakbanerjee3345]

thanks a ton for these review videos.Helped a lot!

[@Leah4sci]

You're welcome, happy to help!

[@raissachiri1302]

Leah, I truly thank you for your videos! You are the O. chem Goddess!!!

[@Leah4sci]

Lol you are very welcome!

[@RylieNikolee]

third orgo 1 test on this stuff on tuesday, and this was so helpful leah! your videos have gotten me through organic 1!

[@suhamoten2060]

me right now lol my exam is tuesday and im watching videos for orgo 1 for my third exam

[@katherineelliott2304]

@@suhamoten2060 Me now! Except Coronavirus is giving us an advantage of taking it online now....

[@Leah4sci]

honored to be able to help

[@hanj5919]

Awesome! Keep up your brilliant effort. It's very2 helpful!

[@Leah4sci]

Thank you! :)

[@gavinlopez7302]

You’re my favorite channel for ochem help, thanks a lot

[@Leah4sci]

Wow, thanks! Happy to help!

[@joshuaoposia4374]

Great video, simple and detailed thanks

[@Leah4sci]

You're welcome!

[@adiado1521]

What a. Lecture!!! Don't stop we want more lecture🙌🙌🙌

[@Leah4sci]

Thanks!

[@emm__jayy]

Your videos are just mind blowing and amazing. Can you please make videos providing cheat sheets for chapters like carbonyl compound, carboxylic acids, phenols and ethers?

[@Leah4sci]

My goal is to eventually cover all organic chemistry reactions

[@jelenazivkovic7423]

Кратак, јасан, прегледан, сликовит, занимљив и свеобухватан подсетник за реакције алкана. Свака част.👍

[@Leah4sci]

Thanks so much for your kind words!

[@shayanshakil8922]

Amazing! God bless you Leah!

[@Leah4sci]

Thank you!!

[@kindaalkoudsi7780]

thank you, your video are very helpful.

[@Leah4sci]

You're so very welcome, happy to help

[@user-yp9de9xb9d]

great thank you so much i wish i could find this sooner and save time on understanding other materials! thanks again this saved me

[@Leah4sci]

Better late than never though, right? Hope it helped and you're very welcome

[@Gabbai]

Really wonderful summary!

[@Leah4sci]

Thanks!

[@oliviamcmillan7677]

I'm gonna fail my test :(

[@ianwatosky5481]

join the club. i have a borderline failing average and am the top quarter of my class or so.

[@Poker96Face]

What did you do?

[@YousaJoke]

Big mood

[@alocookie9416]

Me too T_T

[@charndelier5316]

heyy it’s been two years, did you pass?

[@kromerdude7]

fantastic video and cheat sheet. thank you.

[@Leah4sci]

Glad you found it helpful

[@ICantSeeYourRepliesDickhead]

Very helpful, thank you miss Leah.

[@Leah4sci]

Glad it helped! You're welcome.

[@michaelshammo3345]

Thank you for your work!

[@Leah4sci]

You're very welcome!

[@Mosin_here]

You are simply the best m'am .Do you have any lecture on dash wedge nomenclature of organic compounds,I'd look forward seeing it.Thank you very much 🖤

[@Leah4sci]

I don't have a video dedicated to the nomenclature of molecules with chiral centers. However, you will find these topics addressed in my free Chirality and Stereochemistry series where I walk you through how to identify R and S configurations for chiral molecules. Watch the series at Leah4sci.com/Chirality

[@Samuelmensahbaffoe]

That is a great work. it really helped me

[@Leah4sci]

Glad it helped!

[@sierramiller2752]

god bless u this is exactly what i needed

[@Leah4sci]

Glad I could help!

[@adamfitzpatrick2366]

Great video, thank you!

[@Leah4sci]

Glad it helped! You're welcome.

[@stuhff8169]

4:20- In another video, she explained that this is due to the polar bond formed between the H and O which gives the H a partial positive charge and negates it

[@Leah4sci]

Yes, for more on the mechanism of the Halohydrin Formation, make sure to visit Leah4sci.com/Halohydrin. Thanks for watching!

[@clairezimmerman8885]

holy moly... I finally found a video where someone is explaining the reaction in a digestable manner. all is well now.

[@Leah4sci]

So happy to help you understand!

[@AjayGupta-nr8ou]

great understanding with simple concepts

[@Leah4sci]

Glad you liked it!

[@rebekahm6672]

I’m so worried about my exam but you sum everything up very clearly. Thank you.

[@Leah4sci]

Happy to help! Fingers crossed for your upcoming exam!

[@-r-495]

Thank you! I‘d be interested in hints at why and how a step can go wrong and the risks involved with specific reactions. I understand that is more than is asked in most chemistry education but it is very relevant in daily practice. I really like your colour scheme, we both share a trait 😉

[@Leah4sci]

I'm sure it's relevant in daily practice, but alas it is not something I can help with. I'm strictly a pen & paper chemistry tutor, I haven't been in lab for over a decade

[@WLOfails]

Out of all of organic chem 1, this was the stuff that I struggled with most. This video will definitelly help me alot on my final tomorrow =)

[@WLOfails]

***** Thanks. I know I failed though, but now that i'm aware of your channel since few days ago, I will actually be able to learn the concepts next term. =)

[@Leah4sci]

Glad this helped, sorry to hear that you still failed the class

[@WLOfails]

@@Leah4sci I'm currently working in the field I studied several years for, so it all ended well :)

[@mcmillanbanda6817]

Leah, you are great.

[@Leah4sci]

awww! Thank you :)

[@toasterspoon5000]

thank you Leah! -love from Seattle

[@Leah4sci]

You're welcome. :)

[@user-br6yn2hl3c]

Excellent ,awesome ,fantastic ,fabulous

[@Leah4sci]

Thanks so much!

[@quocthang5527]

Hello, could you please explain to me the meaning of some substances written on reaction arrows, such as Zn-Hg, Zn(Hg), Zn-H2O, EtOH/H2O, BH3·THF? What do the parentheses (), dot (.), dash (-), and slash (/) signify in these cases?

[@Johan88843]

AMAZING. THANK YOU

[@Leah4sci]

You're welcome!

[@OGOlivianne]

Perfect video, thank you

[@Leah4sci]

You're welcome!

[@laurencotogno8626]

this was actually so helpful

[@Leah4sci]

glad I could help!

[@dkgstkyr]

that was great!! thank you!

[@Leah4sci]

You're very much welcome! :)

[@lindokuhlehlatshwayo4341]

wow i get it now i was confused since first semester now its clear thanks a lot

[@Leah4sci]

You are welcome. I'm glad it helped

[@dankeschon5838]

thanks you are way better than my teacher, thanks for this video

[@Leah4sci]

Happy to help! You're welcome.

[@shreyaprasad5815]

your lectures are awesome..😄

[@Leah4sci]

Glad you like them!

[@neh-abenwi7364]

Thank you so much Leah😫😫🙏🙏

[@Leah4sci]

You're very welcome!

[@RaviRaj-xt4vg]

It really helpful ... thank you so mach ....

[@Leah4sci]

Glad it helped! You're welcome :)

[@pankajbharti2832]

U r awesome mam😍 ... U teach the way as my teacher taught ne in class... Thanks

[@Leah4sci]

It's my pleasure :)

[@viswajitati5501]

Thank you very much!

[@Leah4sci]

You're welcome!

[@rohanpatel1864]

Thank you!

[@Leah4sci]

You're welcome!

[@ninahakizmana6693]

how can we apply the reaction on the alkene working backwards

[@Leah4sci]

Look at the clues you see in the products and ask 'what reaction do I know that will give me this product?' this is how I start

[@gurushajuneja1946]

thank youso much maam that helped me a lot to revise for my paper day after tomorrow tahnks a lot u almostsaved e wish me luck

[@Leah4sci]

Glad I could help!

[@Lazy2DaBone]

during Halohydrin i thought a methal shift would occur to place the OH on the more stable carbocation?

[@Leah4sci]

at which point in the video?

[@courtneysoliz7747]

THANK YOU SO MUCH!!

[@Leah4sci]

You are welcome

[@sanaa.9364]

Thank you so much very helpfull video

[@Leah4sci]

You are very welcome :)

[@chander.261]

4:46 ma'am could you kindly explain why the hydroxyl group didn't go to the more substituted tert carbon next door ?

[@Leah4sci]

To understand, we need to look more closely at the mechanism of the halohydrin formation. There is no carbocation intermediate formed, but rather a halonium ion which stabilizes the positive charge and prevents rearrangement. Check out more on this mechanism by visiting leah4sci.com/halohydrin-formation-alkene-reaction-mechanism/

[@johnnyace1300]

+Leah4sci In the hydrohalogenation example, organic chem tutor would say that because the C is chiral you can have Cl on the dash and on the wedge, in racemic mix, is that also a thing?

[@Leah4sci]

I'm sorry, but I don't offer tutoring through KZbin comments. For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join

[@pmat2757]

In the halohydrogenation 4:32 would there be a carbocation shift towards the tertiary carbon so that OH would be on the more carbon

[@Leah4sci]

Actually, no. The formation of the halonium ion intermediate prevents the possibility of a carbocation rearrangement. For more on this reaction, watch my video at kzbin.info/www/bejne/iV6VdJR-ec2AnKs

[@vincentmudimeli4430]

thanks for making organic chem simple

[@Leah4sci]

Aww, you're so very welcome, that's my goal!

[@reachrishav]

Great! It helped a lot! Would like more of such videos..

[@reachrishav]

+Leah Fisch You're welcome.. Do you have any dedicated video on Syn and Anti addition?

[@reachrishav]

Can you please make one.. It would really be helpful!

[@Leah4sci]

Glad to help and yes

[@husseinawjama6034]

This is so good

[@Leah4sci]

I'm glad you enjoy it!

[@hannahpederson3445]

Hi! I was wondering why there is a hydride shift in the hydrohalogenation, but not any of the others shown given that true same alkene is being used in each mechanism. Doesn’t each alkene reaction exhibit a carbocation intermediate, and if so, why do the other examples not go through a hydride shift?

[@Leah4sci]

I'm sorry, but I don't offer tutoring over social media. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/ You can also view my free Alkene Reactions video series and cheat sheet at Leah4sci.com/alkene

[@adityapandey8941]

at 4:43 shouldn't the oh group attach to the tertiary carbon because of the stability of the 3° cabocation?

[@DJoeLawless]

I was thinking the same thing. I expected a hydride shift

[@OPT15]

In this case there is no carbocation intermediate. The nucleophile (H2O) attacks the delta positive carbon on the bromonium. Because there's no true carbocation, no rearrangement

[@Leah4sci]

There's no 'free' carbocation in this reaction. Instead it's a partially positive carbon held in place by the bromonium. OH is attracted to the partially positive carbon and IN attacking, breaks the carbon-bromine bond. Without a free carbocation there is no shift

[@Lexyvil]

Why do these have catalysts, like a Pd, that doesn't seem to react with anything. Mechanisms are the only aspects I'm stuck on before the finals. Also curious as to why it's in Hydrogenation but not Hydrohalogenation.

[@Leah4sci]

I'm sorry, but I don't provide tutoring through KZbin comments. For more help with this and more, I recommend joining the orgo study hall. Full details: leah4sci.com/join

[@ellymearly]

THANK YOU

[@Leah4sci]

You're so welcome!

[@alejandrosantoyo3905]

for the last reaction, cyclopropanation an alkene can be reacted with CH2N2/UV light for the same product?

[@Leah4sci]

Yes, those are also acceptable reagents for the cyclopropanation of an alkene.

[@pritish4095]

Just awesome 👌..

[@Leah4sci]

Glad you think so!

[@ephesianarmorytchannel6838]

So helpful

[@Leah4sci]

So happy it helped you!

[@SpeakOutShyness]

at 4:07 why does it look like both bromines are added to the same side? If the reaction is supposed to proceed with anti stereochemistry doesn't that mean both Br atoms come from opposite faces of the double bond? You only form the trans isomer right?

[@Leah4sci]

while you are absolutely correct this version of the product does not show stereochemistry as denoted by the lines rather than dashes and wedges. It does however state 'anti' to remind you that this is an anti addition

[@aitsidhoumyasmine4601]

Thank you a lot

[@Leah4sci]

You're so welcome!

[@neerjamv978]

U teach really very good 👌

[@Leah4sci]

Thanks!

[@baldski8866]

Very good but only one question.... In the hydrohalogenation example, isn't the Cl going to go on the C that has the less H, being a Markovnikov reaction? Why does the Cl go on a C that has no pi bonds?

[@Leah4sci]

Listen to my explanation in the video one more time. For this example, there is a hydride shift that allows the carbocation to be formed on the more substituted, tertiary carbon. For more on the mechanism of a hydride shift like this one, I invite you to watch the following: kzbin.info/www/bejne/mYS6an96rdmopaM

[@auxcord8919]

Hi leah...do you have a video on catalytic carbon-carbon bond formation. Ex:Heck rxn, Suzuki coupling, stille coupling etc... Im new to your site, so I don't know. Your help with this would be greatly appreciated.

[@Leah4sci]

not yet

[@leialamelas1542]

I love your videos but I seem to need some background to understand this one because I could not be more lost. What is the prequel to this video? I was following the playlist/series..?

[@Leah4sci]

Think of this video as a short summary of all of the other alkene reactions presented in the series. As such, I would watch this video either first (as a preview of what’s to come) or watch it last (as a quick review of everything). For the entire series, in correct order, visit my website at leah4sci.com/alkene-reactions