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 :)
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!
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.
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 ❤️
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!!
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
theres no way. this is toooo much. i have an exam in 2 days, im so beyond unbelievably not ready. a billion different reactions, rules, reagants, mechanisms, reactants, this is anti, this is syn, this does that, this does this. this applies here but doesnt apply there. remember this for here, that for there, these for this. understand this, and that, and those and hoooooooooooooooooooly smokes. theres no way im passing this class let ALONE acing it as i need to. WTH is this subject??????? im so overwhelmed its just insane. as amazing as your videos are i just dont know what to do. this is an absurd subject like what the heckkk. guess i can kiss pharmacy school goodbye wow...
Deep breath! step 1, figure out if you can actually pass your next exam. If not, can you get an extension? If not, can you aim to learn SOME of the reactions very well and hope to get SOME points on your exam? THEN after it's over, put in 250% effort into learning everything you missed so that you cannot help but to ACE every subsequent quiz/exam and hopefully balance out your score. If your dream is pharmacy, don't give up, you must be willing to do whatever it takes to get there. Email me and let's talk. (reference this comment so I know who you are) leah4sci.com/contact
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
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!
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
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.
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 ?
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)
I have wonderful feeling ,,,like i can learn organic chemistry through this channel fastly....Thank you sooooooooooooooooooooooooooo much #Leah Fisch :)
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?
I'm sorry, but I don't offer tutoring/discussion through TH-cam comments. For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join
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 th-cam.com/channels/bb4-QL09VpgEtlXt2Mw3TA.html
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
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.
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.
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.
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 :)
wait they teach you this in college? i'm learning this in high school (i'm from india)
@@vanditbawa7512 that explains why all of my indian peers are so advanced lol
True, I am a high schooler learning it rn 🤖
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!
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.
So happy I could help!
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 ❤️
Oh wow, thanks so much for your kind words. Glad I could help you understand!
FANTASTIC!!!! I LOVED IT
Glad to hear you enjoyed it!
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!
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!!
Yes I am currently in orgo 1! I wished i wouldve found your videos sooner!
You're so very welcome, happy to help you understand!
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!!!
Awesome, so glad to hear the video helped you understand!
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
Aww you are so very welcome, thanks for your kind words!
This series is of immense help. Thank you so much!!
You're very welcome!
this is by far the easiest explanation I have come across. Thank you so much!
Glad it was helpful! You're welcome.
This video is extremely helpful, and explained perfectly- thank you SO much!
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.
aww thanks so much! As for more views, please do share my channel with your classmates
theres no way. this is toooo much. i have an exam in 2 days, im so beyond unbelievably not ready. a billion different reactions, rules, reagants, mechanisms, reactants, this is anti, this is syn, this does that, this does this. this applies here but doesnt apply there. remember this for here, that for there, these for this. understand this, and that, and those and hoooooooooooooooooooly smokes. theres no way im passing this class let ALONE acing it as i need to. WTH is this subject??????? im so overwhelmed its just insane. as amazing as your videos are i just dont know what to do. this is an absurd subject like what the heckkk. guess i can kiss pharmacy school goodbye wow...
Deep breath! step 1, figure out if you can actually pass your next exam. If not, can you get an extension? If not, can you aim to learn SOME of the reactions very well and hope to get SOME points on your exam? THEN after it's over, put in 250% effort into learning everything you missed so that you cannot help but to ACE every subsequent quiz/exam and hopefully balance out your score. If your dream is pharmacy, don't give up, you must be willing to do whatever it takes to get there. Email me and let's talk. (reference this comment so I know who you are) leah4sci.com/contact
@ I appreciate your reply. I sent a message through your link
Brilliant explanation.. I feel like not going to lectures and watch all ur videos. Much gratitude to you Leah. ❤❤
You’re welcome 😊 I'm glad it's helping you so much!
You are such a good explainer!! Not only this video but also other videos. Thank you so much for making my studying easier
You are so welcome! And thank you so much for your kind words, I really appreciate it
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
You are very much welome. I'm glad he videos helped you.
i have to keep watching these mechanism videos over and over again. Easy to understand, but hard to remember.
Manny M. You are right
I'm glad to have videos like this to help you understand and remember. Check out leah4sci.com/memorize, too
Just wanted to say your videos are SO HELPFUL !! THANK YOU!!
You're very welcome, so happy to help!
YOU'RE THE BEST LEAH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! LOVE YOU
aww thanks!
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!
Thank you! :)
You're very welcome, so happy I was able to help!
Ur videos help even jee aspirants in India. They’re amazing.
Awww, thanks! Glad they help you!
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
@@priyansha1950 yeah. Which year of prep are u in?
@@akhil6826I am in 12th rn... so giving JEE this year (1st feb attempt over)
@@priyansha1950 bro same. How much?
keep it up Leah! khan is still a learner where you are. boss-lady!
Thanks!
I'm from India and I loved the way how you explained the whole mechanism
Thank you!
I am Uma from India, Excellent madam!!!! Keep it up.
Glad you like it!
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.
Thank you very much for your kind words, I really, really appreciate it.
Leah, you are the best!!!!
Thanks!
I liked,subscribed and visited your site. You are replying and satisfying our needs. Thanks Alot!!
Thanks so much, happy to help!
I have my exam next week. This really helped me thanks for all your videos! Wish I had you as my professor haha
I'll keep my day job :) but I'm so happy I could help you prepare for your exam!
Wow thanks a lot for these organic videos they've really helped me!
You're very welcome!
Your videos are amazing and understandable,thank you.I will tell my friends about this
You're so welcome and thanks for sharing my videos!
Amazing explanation. It's very helpful for IIT JEE aspirant.
You're very welcome!
this is a really great video. thank you.
You're very welcome!
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🙇🙇🙇
Thanks for the kind words, but I love what I'm doing too much to teach in just one place!
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 ?
good question but I have no idea.
whoah this was crystal! thanks a bunch!!
You're very welcome!
Thanks for uploading!
You're so welcome!
Супер објашњаваш.👏👏👏👍👍👍
Glad you liked it!
Thank you so so much! This is helping amazingly with my studies and the explanation is very clear and friendly. Thank you very much
You're so very welcome, and thanks for your kind words!
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)
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
great video!
Glad you enjoyed it!
you have helped me alot
thank you very very much
You're welcome, so happy to help!
In the hydroboration step...H- ( minus) comes out of BH3 ,right?
And what is the difference between regioselective and stereoselective
at which point in the video?
I have wonderful feeling ,,,like i can learn organic chemistry through this channel fastly....Thank you sooooooooooooooooooooooooooo much #Leah Fisch :)
You're very welcome, so happy to help!!!
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?
I'm sorry, but I don't offer tutoring/discussion through TH-cam comments. For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join
Thankyou so much.. So amazing
You're welcome!
loved it. I tried to sign up for the book and cheat sheets but I never got anything emailed to me.
Contact me about this on my website so I can figure out what happened: leah4sci.com/contact
2:26 isnt that the transition state ?
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!
It's not about single bonds, rather it's about how many groups are around the atom. I cover this in my hybridization video
Nice leah
Thanks!
@@Leah4sci which country u r from leah?
How does the Pi bond attacks the boron, isn’t boron has a -1 charge ?
Boron is neutral with an incomplete octet (exception to the octet rule). The pi bond attacks its empty P orbital
Thanks you a lot for providing me shits . Can you send some more note & problem on Reaction Mechanism.
For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join
Thank you!
You're welcome! :)
Hi, why is it syn selectivity? Thanks!
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
th-cam.com/channels/bb4-QL09VpgEtlXt2Mw3TA.html
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
I thought I understood hydroboration but after this video am not too sure anymore
I'm sorry to hear that you aren't sure if you understand anymore. Feel free to contact me here: leah4sci.com/contact/
Hi Leah , is there captioning on this vid?
There is not! Thanks for bringing this to my attention. I will make sure this video get's captions soon!
Poor boron getting attacked over and over
Poor thing...
Thank you very much
You're so welcome!
Thanks a lot 😘
You're welcome 😊
thank you so much!
So happy to help! And thanks for letting me know
finally I got u....
Great! Thanks for visiting. Don't forget to subscribe!
Plz make a video on HBO of alkynes
I'm currently working on other topics right now, but I will consider that topic for the future
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!
Thank you! and you are most welcome. Please don't forget to subscribe.
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.
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.
TarabAseel12 Saw your channel, nice to see you’re an incel on top of everything else 😩‼️‼️
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.
You Rock!!
Thanks!!!
Not the boron being bullied by other molecules who force it to take another bond... :(
big bullies
super video
glad you liked it!
Fantastic
Thank you so much 😀
Keep it up Leah,,,,,I real lyke ur website .....its real amaizing
Thank you for your kind words
Thanx to.....leah
Thanks
You're welcome!
Thank ypu
You're welcome!
Thank you so much. Save my time from reading books
Glad the video helped! You are very much welcome!
Have you any information about IIT JEE exam (🇮🇳india)
Not specifically, no. But you can match my resources to what you are studying with this: leah4sci.com/syllabus
youre great but this made me cry
Tears of joy?
@@Leah4sci pools of agony
Me: I'm gonna fill your vacant p- orbital
Boron: No, you will not❌
:)
my brain now is leaving me
Well make it stop! You need that!
holy moly this long LOL
:)
I'm so lost 😑
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!
You're welcome!