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

7 ай бұрын

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

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

7 ай бұрын

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

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

4 жыл бұрын

Glad it was helpful!

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

@mcmillanbanda6817

5 жыл бұрын

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

5 жыл бұрын

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

@alishas7129

4 жыл бұрын

@@mcmillanbanda6817 what country are you from

@Leah4sci

7 ай бұрын

You're very welcome!

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

7 жыл бұрын

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

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

5 жыл бұрын

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

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

2 жыл бұрын

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

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

@Leah4sci

Ай бұрын

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

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

2 жыл бұрын

Happy to help!

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

5 жыл бұрын

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

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

4 жыл бұрын

You're so welcome!

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

@Leah4sci

3 жыл бұрын

Aww, thanks! You are so welcome!

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

@Leah4sci

4 жыл бұрын

You're very welcome!

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

@Leah4sci

6 ай бұрын

My pleasure! Thank you for the kind words

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

7 жыл бұрын

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

@Leah4sci

7 ай бұрын

Glad my videos were able to clear up your frustrations

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

@Leah4sci

6 ай бұрын

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

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

4 жыл бұрын

You're so welcome!

@erinschillings

2 жыл бұрын

:)

I'm gonna fail my test :(

@ianwatosky5481

7 жыл бұрын

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

@Poker96Face

5 жыл бұрын

What did you do?

@YousaJoke

5 жыл бұрын

Big mood

@alocookie9416

5 жыл бұрын

Me too T_T

@charndelier5316

4 жыл бұрын

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

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

@Leah4sci

3 жыл бұрын

Happy to hear that!

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

@Leah4sci

4 жыл бұрын

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

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

@Leah4sci

Жыл бұрын

Thanks so much for your kind words!

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

@Leah4sci

Ай бұрын

You're so welcome, glad it helped!

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

@Leah4sci

6 жыл бұрын

LOL! Too funny. You are very welcome!

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

27 күн бұрын

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

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

@Leah4sci

7 жыл бұрын

I'm glad you like it!

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

@Leah4sci

4 жыл бұрын

You're very welcome, glad I could help!

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

@Leah4sci

Жыл бұрын

Happy to help! You're welcome.

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

7 ай бұрын

I'm planning to do a video on this soon

Thank you, Leah! This video is very helpful.

@Leah4sci

5 жыл бұрын

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

Your vids are some rare gems !

@Leah4sci

2 жыл бұрын

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

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

Ай бұрын

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

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

@Leah4sci

2 жыл бұрын

Wow, thanks! Happy to help!

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

@Leah4sci

3 ай бұрын

Happy to help! Fingers crossed for your upcoming exam!

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

@Leah4sci

2 жыл бұрын

So happy to help you understand!

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

@Leah4sci

3 жыл бұрын

Thanks!

Amazing! God bless you Leah!

@Leah4sci

6 ай бұрын

Thank you!!

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

7 ай бұрын

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

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?

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

@Leah4sci

2 жыл бұрын

Yay!!! So glad you found them!

Thank you Leah. Your videos are very helpful

@Leah4sci

6 ай бұрын

You're so very welcome, happy to help!

Thank you! God bless you!

@Leah4sci

7 ай бұрын

You're very welcome

Thank you for all your help !

@Leah4sci

7 ай бұрын

You're welcome, happy to help!

This was an awesome recap ! thank you

@Leah4sci

6 ай бұрын

You're welcome!

Very good video! straight to the point

@Leah4sci

7 ай бұрын

Glad you liked it!

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

@Leah4sci

5 жыл бұрын

Thank you! :)

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

@Leah4sci

6 жыл бұрын

Lol you are very welcome!

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

8 жыл бұрын

***** 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

7 ай бұрын

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

@WLOfails

7 ай бұрын

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

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

7 ай бұрын

My goal is to eventually cover all organic chemistry reactions

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

@Leah4sci

6 ай бұрын

You're welcome, happy to help!

Very helpful, thank you miss Leah.

@Leah4sci

Жыл бұрын

Glad it helped! You're welcome.

Excellent ,awesome ,fantastic ,fabulous

@Leah4sci

7 ай бұрын

Thanks so much!

Leah, you are great.

@Leah4sci

5 жыл бұрын

awww! Thank you :)

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

@Leah4sci

5 жыл бұрын

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

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

2 жыл бұрын

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

Really wonderful summary!

@Leah4sci

7 ай бұрын

Thanks!

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

@suhamoten2060

5 жыл бұрын

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

@katherineelliott2304

4 жыл бұрын

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

@Leah4sci

7 ай бұрын

honored to be able to help

Great video, simple and detailed thanks

@Leah4sci

2 жыл бұрын

You're welcome!

god bless u this is exactly what i needed

@Leah4sci

4 жыл бұрын

Glad I could help!

thank you Leah! -love from Seattle

@Leah4sci

5 жыл бұрын

You're welcome. :)

thank you, your video are very helpful.

@Leah4sci

6 ай бұрын

You're so very welcome, happy to help

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

2 жыл бұрын

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 kzread.info/dash/bejne/hWFmpcOBdMuzlqw.html

Great video, thank you!

@Leah4sci

Жыл бұрын

Glad it helped! You're welcome.

great understanding with simple concepts

@Leah4sci

6 ай бұрын

Glad you liked it!

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

2 жыл бұрын

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: kzread.info/dash/bejne/lYeLm659qNfbn6Q.html

fantastic video and cheat sheet. thank you.

@Leah4sci

7 ай бұрын

Glad you found it helpful

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

@Leah4sci

Ай бұрын

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

My Organic professor is terrible. Reads straight out of the book on an overhead and never works out any problems. Also makes you feel stupid if you ask for help. THANK YOU SO MUCH for these helpful videos. It's hard to teach yourself organic chem out of a textbook.

@Leah4sci

6 жыл бұрын

I'm sorry you are having a less than positive experience with your professor! I'm glad the videos are helping!

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

Жыл бұрын

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

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

Жыл бұрын

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

thanks for making organic chem simple

@Leah4sci

10 ай бұрын

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

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

@Leah4sci

3 жыл бұрын

It's my pleasure :)

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

@Leah4sci

6 жыл бұрын

at which point in the video?

That is a great work. it really helped me

@Leah4sci

6 жыл бұрын

Glad it helped!

how can we apply the reaction on the alkene working backwards

@Leah4sci

7 ай бұрын

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

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

@Leah4sci

7 жыл бұрын

You are welcome. I'm glad it helped

this was actually so helpful

@Leah4sci

4 жыл бұрын

glad I could help!

Thank you for your work!

@Leah4sci

Жыл бұрын

You're very welcome!

+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

5 жыл бұрын

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

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

@reachrishav

8 жыл бұрын

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

@reachrishav

8 жыл бұрын

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

@Leah4sci

7 ай бұрын

Glad to help and yes

Hello leah can you check back the oxidative cleavage with hot KMnO4 in your cheat sheet..? the 2nd products in the cheat sheet gives formic acid (HCOOH) but in your video 11:57 it gives CO2

@affin1176

3 жыл бұрын

I'm guessing the CO2 as the 2nd product is correct. After cleavage the unsubstituted carbon should become CO2, monosubstituted become COOH and disubstituted become ketone

@Leah4sci

2 жыл бұрын

Yes, you are absolutely right! Thank you for pointing this out. The correct second product of the oxidative cleavage reaction with KMnO4 would be CO2. A terminal carbon on an alkene will be fully oxidized. Again, thank you! We will correct the alkenes cheat sheet on our site.

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

6 жыл бұрын

Glad I could help!

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

@Leah4sci

2 жыл бұрын

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/

My textbook (Wade) says that Oxymercuration-Demurcation/Alko... has no stereochemistry, so there's no Anti/Syn

@Leah4sci

2 жыл бұрын

From a stereochemical perspective, oxymercuration is an anti addition. This has to do with the formation of the mercurinium ion as an intermediate. The nucleophile cannot attack from the same side as the mercury because of steric hindrance. If you’d like to further break down any statements from your textbook, I’d love to do so in my Organic Chemistry Study Hall. For more information, go to studyhall.leah4sci.com/join

your lectures are awesome..😄

@Leah4sci

3 жыл бұрын

Glad you like them!

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

6 жыл бұрын

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

everything was purely explained and thnc for clarifying some tricky things. But mem i only have ONE PROBLEM "HOW DO YOU SEE IF YOU AN HYDRIDE SHIFT"??????

@Leah4sci

3 жыл бұрын

Glad I helped clear things up for you. Regarding your questions, a hydride shift can occur in organic chemistry reactions that involve a carbocation intermediate. If such a rearrangement will place the carbocation on a more substituted carbon, then the hydride shift is highly favorable because of its ability to stabilize the intermediate. For more, visit leah4sci.com/hydride-shift-mechanism/

hii, thanks for the video, it was really helpful. but im still a bit confused at the Halohydrin process, according to what u said it should be following mark's rules, but if thats the case, why does the H-shift from tert-C to sec-C doesnt happen to form tert-Carbionium ion, since it would be more stable, and the end product would then be 4bromo 2methyl 2ol butan ?

@haanhnguyen8776

10 күн бұрын

i am having my finals next week and now im going through all of your videos, they are really helpful, thank you so much

@haanhnguyen8776

10 күн бұрын

im currently thinking its because of the intermediate, where both C of the double form form a bond with Br, which gives them the positive partial charge, and the H-shift doesnt like the positive charge so much, but the OH- ion does, thats why the OH-Ion jump right into the sec-C, but wouldnt that make it an anti marks product?

Perfect video, thank you

@Leah4sci

3 жыл бұрын

You're welcome!

Thank you so much Leah😫😫🙏🙏

@Leah4sci

3 жыл бұрын

You're very welcome!

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

7 ай бұрын

not yet

U teach really very good 👌

@Leah4sci

4 жыл бұрын

Thanks!

quick question, so these are just different ways/methods in breaking an alkene? because if so, these different ways can also be used with organic synthesis reactions? btw, your videos have helped me so much! so thanks for posting these great videos :)

@Leah4sci

7 жыл бұрын

These are the different ways for reacting alkenes, yes

Thank you so much very helpfull video

@Leah4sci

7 жыл бұрын

You are very welcome :)

AMAZING. THANK YOU

@Leah4sci

5 жыл бұрын

You're welcome!

How do I know if a reaction will do an anti markovnikov addition or a markovinkov addition? Is it just purely memorizing which reaction does what or is there some trick

@Leah4sci

3 жыл бұрын

To understand why any given reaction produces a Markovnikov or anti-Markovnikov product, you must understand something about the reaction mechanism itself. Determining the favored product of the reaction is really all about identifying the reaction intermediate. In short, Markovnikov reactions usually have highly stable carbocation intermediates, while anti-Markovnikov reactions do not show a carbocation intermediate. For more on this, visit my tutorial at leah4sci.com/markovnikov

@zaminahmed297

3 жыл бұрын

@@Leah4sci thank you, jus wondering do u cover content for organic 2

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

5 жыл бұрын

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

Hey Leah. I'm REALLY into chemistry and I've gotten myself some equipment (the basic lab stuff: beakers, hotplate stirrer, water bath, sep. funnel, büchner funnel, distillation apparatus, etc.) I know basic chemistry - but I really, really wanna get into more advanced stuff like organic chemistry. I've watched your videos on naming things, and I can do that now. That is great and all, but no real use if I can't come up with a way to synthesize the molecules that I'm naming. What do you suggest as a good starting base for organic chemistry? I reckon your videos start at atleast intermediate level.

@Leah4sci

7 ай бұрын

oh wow! Sounds really exciting! I haven't been in a lab or touched actual chemistry equipment in a long time. I teach 'pen and paper' chemistry

@bruse8778

7 ай бұрын

​@@Leah4sci Hey Leah, what a reunion 8 years later. I now have a degree in pharmacy (first 3 semesters are organic chemistry), a quite elaborate home laboratory, and have various optimized syntheses processes based on patents. I remember watching this video 8 years ago when I was just 16 years old, and without many resources, so glassware and even basic chemicals were super exciting. Funny how life progresses. I truly admire your initiative at the time (and perhaps ongoing?) to teach the youth about organic chemistry and nourish the young minds with the intrigue of the complex nature of these chemical groups and the exciting reactions we have devised to add or subtract them to bend the molecules to our will. Merry Christmas, and thanks again!

that was great!! thank you!

@Leah4sci

5 жыл бұрын

You're very much welcome! :)

The video is still very hot despite the fact that it was uploaded 7 years ago. It seems like one uploaded yesterday, thanks 🙏

@Leah4sci

Жыл бұрын

All thanks to my students who keep watching and making my stuff relevant! You're so welcome. :)

My exam is tomorrow and all I have to say is THANK YOU

@Leah4sci

2 жыл бұрын

you're so welcome! How did your exam turn out?