I'm studying for my final exam which is in 4 days and your alkene reaction playlist has been a life saver. I go to one of the top universities in Canada and my professor gets paid lots and lots of money yet I can't understand him at all. You, on the other hand, explain it so simply and perfectly that a person like me ( who is way below average at chem) can understand it. Thank you very much :)

@vanditbawa7512

5 жыл бұрын

wait they teach you this in college? i'm learning this in high school (i'm from india)

@kittycat10072

4 жыл бұрын

@@vanditbawa7512 that explains why all of my indian peers are so advanced lol

@studybox2359

Жыл бұрын

True, I am a high schooler learning it rn 🤖

@Leah4sci

6 ай бұрын

I'm so happy that I could help you understand the concept better!

Your channel is ABSOLUTELY amazing. I know it sounds silly-- but you provide a beautiful thing to students-- hope -- in a class that is notoriously daunting. THANK YOU!

@Leah4sci

6 ай бұрын

Oh wow, thanks so much for your kind words! So glad I could help!

Wow, that is a complicated reaction. Explained MUCH better than my textbook and every other resource I've used thus far. Professors at my university don't even expect us to know the mechanism for the oxidation part - they think it's too tough for us! What a shame. Leah proving 'em wrong one video at a time.

@Leah4sci

5 ай бұрын

So happy I could help!

This whole mechanism got me all types of f*cked up xD Im so glad you said "most professors won't ask you to do this" because I can just learn that OH is added to the less substituted side xD THANK YOU LEAH! I just watched your WHOLE alkene reactions playlist and helped me understand all the concepts. Much love from 2018 :) 4 years later and still rocking it

@Leah4sci

5 жыл бұрын

You are very much welome. I'm glad he videos helped you.

You're amazing! I never knew this reaction had so much behind the scenes chemistry going on. My textbook has literally just squeezed this in without explaining what really happens. You've made it so clear and I really appreciate your efforts and your narration is just perfect ❤️

@Leah4sci

3 жыл бұрын

Oh wow, thanks so much for your kind words. Glad I could help you understand!

What a fantastic explanation! you give sense to things. you answer so many "whys" and "hows" in your explanations. thanks for such a great work!

@Leah4sci

6 ай бұрын

You're so welcome; I'm glad to help provide the reason behind the answer!

You are the best! I've been bingeing on your videos and it helped me understand everything about organic chemistry! I love how you explain everything in a simple understanding way. Thank you so much :D!!

@MurasakiBubble

9 жыл бұрын

Yes I am currently in orgo 1! I wished i wouldve found your videos sooner!

@Leah4sci

5 ай бұрын

You're so very welcome, happy to help you understand!

This series is of immense help. Thank you so much!!

@Leah4sci

3 жыл бұрын

You're very welcome!

I Can't thanks you enough you are really great omg i cant believe i understood everything in this amazing alkenes serise much love for you princess of organic

@Leah4sci

6 ай бұрын

Aww you are so very welcome, thanks for your kind words!

Thankyou so much ... I always had the trouble with the oxidation part but now it makes so much more sense ... Keep up the good work!!!

@Leah4sci

4 жыл бұрын

Awesome, so glad to hear the video helped you understand!

This video is extremely helpful, and explained perfectly- thank you SO much!

@Leah4sci

6 жыл бұрын

Thanks for your kind words! You're very welcome!

Thank you so much for this alkene mechanism playlist. You are literally saving my gpa. You deserve more views.

@Leah4sci

2 жыл бұрын

aww thanks so much! As for more views, please do share my channel with your classmates

Just wanted to say your videos are SO HELPFUL !! THANK YOU!!

@Leah4sci

6 ай бұрын

You're very welcome, so happy to help!

YOU'RE THE BEST LEAH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! LOVE YOU

@Leah4sci

7 ай бұрын

aww thanks!

Brilliant explanation.. I feel like not going to lectures and watch all ur videos. Much gratitude to you Leah. ❤❤

@Leah4sci

3 жыл бұрын

You’re welcome 😊 I'm glad it's helping you so much!

this is by far the easiest explanation I have come across. Thank you so much!

@Leah4sci

Жыл бұрын

Glad it was helpful! You're welcome.

i have to keep watching these mechanism videos over and over again. Easy to understand, but hard to remember.

@nainaramani7383

5 жыл бұрын

Manny M. You are right

@Leah4sci

6 ай бұрын

I'm glad to have videos like this to help you understand and remember. Check out leah4sci.com/memorize, too

I find myself so lucky that I found your channel...!! I was actually struggling with organic chemistry until I found your videos! A month and a few weeks left for my exams.. I hope I'd be able to ace in organic chem. :) Thanks!

@namratachauhan6386

9 жыл бұрын

Thank you! :)

@Leah4sci

6 ай бұрын

You're very welcome, so happy I was able to help!

Wow thanks a lot for these organic videos they've really helped me!

@Leah4sci

5 ай бұрын

You're very welcome!

Leah, you are the best!!!!

@Leah4sci

5 жыл бұрын

Thanks!

I liked,subscribed and visited your site. You are replying and satisfying our needs. Thanks Alot!!

@Leah4sci

7 ай бұрын

Thanks so much, happy to help!

Thanks for uploading!

@Leah4sci

6 ай бұрын

You're so welcome!

Your videos are amazing and understandable,thank you.I will tell my friends about this

@Leah4sci

6 ай бұрын

You're so welcome and thanks for sharing my videos!

this is a really great video. thank you.

@Leah4sci

4 жыл бұрын

You're very welcome!

keep it up Leah! khan is still a learner where you are. boss-lady!

@Leah4sci

6 ай бұрын

Thanks!

Hey guys. If you love the videos that Leah has on youtube, don't forget to subscribe. Furthermore, give her studyhall service a try. I'm currently subscribed and I can hang my hat on the fact that I will not have a problem with ochem 1. Leah answers questions on her facebook group every day. If she doesn't get to it first, someone else will. She is ultra-responsive to questions of any kind. Recently, someone posted an usual reaction and she went ahead and made a video about it so everyone could understand it. Her service is very interactive and not just one of those services where you're on your own. Her service is one of a kind. You can potentially interact with her almost every day.

@Leah4sci

7 жыл бұрын

Thank you very much for your kind words, I really, really appreciate it.

I have my exam next week. This really helped me thanks for all your videos! Wish I had you as my professor haha

@Leah4sci

3 ай бұрын

I'll keep my day job :) but I'm so happy I could help you prepare for your exam!

whoah this was crystal! thanks a bunch!!

@Leah4sci

4 жыл бұрын

You're very welcome!

great video!

@Leah4sci

3 жыл бұрын

Glad you enjoyed it!

I'm from India and I loved the way how you explained the whole mechanism

@Leah4sci

7 ай бұрын

Thank you!

I really really wish u were my teacher in my class...I have never seen someone so clear in every concept...plz come to Mumbai India🙇🙇🙇

@Leah4sci

7 ай бұрын

Thanks for the kind words, but I love what I'm doing too much to teach in just one place!

you have helped me alot thank you very very much

@Leah4sci

7 ай бұрын

You're welcome, so happy to help!

Amazing explanation. It's very helpful for IIT JEE aspirant.

@Leah4sci

3 жыл бұрын

You're very welcome!

Thankyou so much.. So amazing

@Leah4sci

4 жыл бұрын

You're welcome!

Супер објашњаваш.👏👏👏👍👍👍

@Leah4sci

Жыл бұрын

Glad you liked it!

Thank you!

@Leah4sci

5 жыл бұрын

You're welcome! :)

Ur videos help even jee aspirants in India. They’re amazing.

@Leah4sci

3 жыл бұрын

Awww, thanks! Glad they help you!

@priyansha1950

3 жыл бұрын

Ikr! I'm understanding for the first time whatever is written in my book(NCERT) in 40-50 words and my teacher explained in a really hard to follow manner

@akhil6826

3 жыл бұрын

@@priyansha1950 yeah. Which year of prep are u in?

@priyansha1950

3 жыл бұрын

@@akhil6826I am in 12th rn... so giving JEE this year (1st feb attempt over)

@akhil6826

3 жыл бұрын

@@priyansha1950 bro same. How much?

thank you so much!

@Leah4sci

6 ай бұрын

So happy to help! And thanks for letting me know

I am Uma from India, Excellent madam!!!! Keep it up.

@Leah4sci

4 жыл бұрын

Glad you like it!

I have wonderful feeling ,,,like i can learn organic chemistry through this channel fastly....Thank you sooooooooooooooooooooooooooo much #Leah Fisch :)

@Leah4sci

6 ай бұрын

You're very welcome, so happy to help!!!

Nice leah

@Leah4sci

3 жыл бұрын

Thanks!

@shivakumarnagavimath157

3 жыл бұрын

@@Leah4sci which country u r from leah?

Very well done job on the hydroboration reaction. Was wondering since Aluminum is like Boron with 3 electrons in its outer shell, can it undergo the same process ? Or is it too bulky because of a larger atomic diameter ?

@Leah4sci

7 жыл бұрын

good question but I have no idea.

Fantastic

@Leah4sci

3 жыл бұрын

Thank you so much 😀

You Rock!!

@Leah4sci

6 ай бұрын

Thanks!!!

Thanks a lot 😘

@Leah4sci

4 жыл бұрын

You're welcome 😊

Leah please will you tell if there will be any change in the step 1 of hydroboration if two H's in BH3 are replaced by some bulky R/alkyl groups. (Please consider 2-Methyl-2butene as it has secondary and tertiary carbons)

@Leah4sci

6 жыл бұрын

I'm sorry, but I don't offer tutoring over youtube comments. For more help with this, I recommend joining the orgo study hall: leah4sci.com/join

Thank ypu

@Leah4sci

7 ай бұрын

You're welcome!

super video

@Leah4sci

6 ай бұрын

glad you liked it!

Thanks

@Leah4sci

7 ай бұрын

You're welcome!

In the hydroboration step...H- ( minus) comes out of BH3 ,right? And what is the difference between regioselective and stereoselective

@Leah4sci

6 жыл бұрын

at which point in the video?

Thank you so so much! This is helping amazingly with my studies and the explanation is very clear and friendly. Thank you very much

@Leah4sci

2 жыл бұрын

You're so very welcome, and thanks for your kind words!

Hi , Dear Leah , I want to ask about Hydroboration , on step 2 : oxidation , what if it is a OH- attached to the Boron instead of the OOH- , then OH- will have nothing to kick out (originally OOH- will kick out OH- and replaced by R group to form - BOR ) , and the R group can't attach back to the Oxygen atom , then It would be Boron with 3 OH- , B(OH)3 , below are 2 questions : 1. can I just skip the H2O2 ( not adding any) and just add H2O & NaOH 2. is it OOH- must attack before OH- attack Boron? so can't form B(OH)3 directly? any chance OH- can attack before OOH- when OH- is just adjacent to the Boron atom?

@Leah4sci

5 жыл бұрын

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

Thanks you a lot for providing me shits . Can you send some more note & problem on Reaction Mechanism.

@Leah4sci

5 жыл бұрын

For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join

loved it. I tried to sign up for the book and cheat sheets but I never got anything emailed to me.

@Leah4sci

6 жыл бұрын

Contact me about this on my website so I can figure out what happened: leah4sci.com/contact

finally I got u....

@Leah4sci

5 жыл бұрын

Great! Thanks for visiting. Don't forget to subscribe!

I thought I understood hydroboration but after this video am not too sure anymore

@Leah4sci

4 жыл бұрын

I'm sorry to hear that you aren't sure if you understand anymore. Feel free to contact me here: leah4sci.com/contact/

Keep it up Leah,,,,,I real lyke ur website .....its real amaizing

@Leah4sci

6 жыл бұрын

Thank you for your kind words

@salimadidace2975

6 жыл бұрын

Thanx to.....leah

How does the Pi bond attacks the boron, isn’t boron has a -1 charge ?

@Leah4sci

4 ай бұрын

Boron is neutral with an incomplete octet (exception to the octet rule). The pi bond attacks its empty P orbital

Plz make a video on HBO of alkynes

@Leah4sci

6 жыл бұрын

I'm currently working on other topics right now, but I will consider that topic for the future

Hi Leah , is there captioning on this vid?

@Leah4sci

6 жыл бұрын

There is not! Thanks for bringing this to my attention. I will make sure this video get's captions soon!

Hi, why is it syn selectivity? Thanks!

@prasunmukherjee1139

4 жыл бұрын

The reaction starts with initial attack of pi bond to the Lewis acid borane and as soon as the attack happens the boran becomes a borohydride analogue which is highly reactive and want to give an hydride to an electrophilic center which gives no chance to the broken pi bond to rotate via single bond rotation and thereby prevents any anti addition. You can take a look at my channel kzread.info/dron/bb4-QL09VpgEtlXt2Mw3TA.html

@Leah4sci

8 ай бұрын

BH3 reacts with the alkene in a simultaneous 'concerted' mechanism. Since B and H add together, they have to add next to each other on the same 'syn' side. B is ultimately replaced by OH in a series of steps once again on the same face of the molecule

2:26 isnt that the transition state ?

@Leah4sci

2 жыл бұрын

Yes, exactly. It's not a stable intermediate, but a transition state that is unable to be isolated in solution.

Can anyone explain why BH3 is sp2 hybridized? I though single bonds were sp3 hybridized and BH3 has 3 single bonds. Please help me with this!

@Leah4sci

9 ай бұрын

It's not about single bonds, rather it's about how many groups are around the atom. I cover this in my hybridization video

youre great but this made me cry

@Leah4sci

4 жыл бұрын

Tears of joy?

@drabmajje

4 жыл бұрын

@@Leah4sci pools of agony

Poor boron getting attacked over and over

@Leah4sci

3 жыл бұрын

Poor thing...

Thank you so much. Save my time from reading books

@Leah4sci

5 жыл бұрын

Glad the video helped! You are very much welcome!

Have you any information about IIT JEE exam (🇮🇳india)

@Leah4sci

3 жыл бұрын

Not specifically, no. But you can match my resources to what you are studying with this: leah4sci.com/syllabus

You are so much better than the OrganicChem tutor channel. His voice is also annoying and yours is so clear and pleasing to the ears. lol thank you!

@Leah4sci

5 жыл бұрын

Thank you! and you are most welcome. Please don't forget to subscribe.

@TarabAseel12

5 жыл бұрын

Lol, Ochemtutor is just perfect with way more info on his channel than here and he has such a calming voice, maybe you just arent that bright.

@llnn1142

5 жыл бұрын

TarabAseel12 HAHHA are you his friend? Perhaps lover? You’ve got this immense sense of loyalty to him. If I really need to clarify it for you, there exists countless people who tutor in this world. Some tutors connect better with certain people. Boo, I hurt your fragile feelings .... grow up and stop projecting your inadequacy onto the world.

@llnn1142

5 жыл бұрын

TarabAseel12 Saw your channel, nice to see you’re an incel on top of everything else 😩‼️‼️

@TarabAseel12

5 жыл бұрын

Nini Le I’m laughing right now, no I’m not his friend but I wish I were, he is a great helpful guy who helps for free, and I happen to tutor o chem for free as well for 10 years already, what have you done to humanity except being a negative influence? You’ve got issues.

Me: I'm gonna fill your vacant p- orbital Boron: No, you will not❌

@Leah4sci

4 жыл бұрын

:)

holy moly this long LOL

@Leah4sci

3 жыл бұрын

:)

my brain now is leaving me

@Leah4sci

3 жыл бұрын

Well make it stop! You need that!

I'm so lost 😑

@Leah4sci

3 жыл бұрын

I'm so sorry to hear that! What makes you feel lost? Contact me through my website leah4sci.com/contact/ and my assistant or I will do our best to help you.

Thank you!

@Leah4sci

Жыл бұрын

You're welcome!