50: Finding chiral carbons in organic molecules

Practice finding chiral carbons in a variety of organic molecules

[@brjtney]

Thank you for this, you deserve all the awards. Very clear and helpful.

[@OrcjaEnglish]

Ma'am! You have made a mistake while finding the total number of chiral centers in the last example. You just mentioned the four chiral centers. In a fact, there are the five chiral centers in the last example. Hope, you will reconsider it. Thank you for a nice lecture. ❣

[@affbear3024]

you missed the OH one

[@bidohdez]

i was about to point that out too

[@Conclusions]

Thank god it wasn’t just me going crazy

[@Elif-eo5dn]

You are the best explainer, no one shows the groups..

[@preetthorat6562]

In last example...carbon attached to -OH group should also be chiral.
Btw your explanation is superb!!!
❤ from India🇮🇳

[@adayatatime4061]

exactly. thanks for pointing out

[@haddouabdelghani6911]

Thank you.
But what about the carbon atom attached to the OH group in the sixth example.

[@RoxiHulet]

Aaaahhhh yes you are correct - I missed one!!

[@haddouabdelghani6911]

@@RoxiHulet thank you.

[@ridaaman334]

I also looking for that one I thought I am wrong but then I read the comments 😅 thanks alot 🌺

[@haddouabdelghani6911]

@@ridaaman334 Thanks.

[@gracemaryvarghese6619]

I thought so
U taught well!

[@francesanne6135]

This was so helpful when the book, other videos, and the teacher couldn’t explain to me what parts of the molecule I’m supposed to be looking at when determining the chirality center. Thank you so much!!!

[@calebheide2694]

Fantastic quick breakdown with good variety of examples.

[@Medholic]

What a clear explanation I am watching this video from 🇮🇳

[@willylmao]

What a great and concise explanation. I finally wrapped my head around the C=C and carbon triple bond concept and how they factor into chirality, thanks for this.

[@RoxiHulet]

Fantastic! I’m so happy it was helpful!

[@presto900]

You're an angel for explaining this so well. Quick question though:
On the last example, why is the carbon bound to the hydroxyl group not a chiral center?

[@RoxiHulet]

Yes I missed that one, someone else also caught it :)

[@presto900]

@@RoxiHulet Oh, I see the comment now! Would have done me good to look before I posted.. Sorry about that, but thank you for the response anyway!
Thank you again for the great explanation

[@divyanshi492]

Thanks a lots for such a clear explanation it was so useful 😊

[@foysalahammed8765]

Best Explanation ❤️‍🔥Searching This Kind Of Video For A Long Time😪Love From Bangladesh 🇧🇩💪

[@zerminaaziz2924]

last structure has 5 chiral center

[@jusleejolm1042]

Well explained. The limonene example is why I came here. There can also be non-carbon chiral centres though.

[@xesthetic1]

Thank you so much ❤️
This is the best explanation i have seen so far.

[@eflam3374]

This video saved me 3 points on my Exam! It's everything I needed.

[@RoxiHulet]

Yay!! :)

[@easylearning6531]

So much surprising fantastic explanation .praise from india

[@opufy]

you're really good at your job!

[@RoxiHulet]

Thank you!

[@tinodhliwayo9542]

Thank you for making this concept clear

[@RoxiHulet]

You're very welcome!

[@blaakcoffee]

Am I supposed to focus on every substituent attached to the carbon in question? For example, in the first chiral group with the chlorine, I didn't realize I was supposed to be taking the CH2 and CL in to account. IS this correct?

[@RoxiHulet]

Very good question! Yes, you are correct. When you are trying to decide if a carbon is chiral, you will always look at the whole entire collection of atoms coming off each of its four bonds.

[@vidhiluniya6709]

omg believe or not this really helped me a lotttt and i mean it! thankyou very much! never thought that organic can be this easy

[@noreensyed4877]

Wish you were my ochem professor. This video was so helpful and easy to understand. Thank you

[@mhsuan__]

The explanation is crystal-clear. I've been confused about the asymmetric carbon problems the whole night ! Thanks god I find this tutorial! Wish I can learn organic chemistry in your class :(

[@sbar3362]

You are the BEST ROXI!!!

[@user-hl9yo6bh6u]

Hey Roxi thank you for the explanation but on the last one what happened to the carbon atom that was attached to the hydroxyl group?

[@KASThere]

at 9:13 you have missed the OH group that was attached to the carbon atom, do we want to ignore it nor not ? because it does not have ch2, ch3 and double bond carbon. Could you please explain this to me?

[@leenmcheik7862]

I was coming here to write the exact same thing! I guess she just forgot about it

[@YuvrajSingh-nu8vr]

Heyy Roxi , Really appreciate the technique and the way you explain all the topic in such a easy way 👏👏

[@shivamsharma-pe1wv]

Ah yeh thanks for explaining. This will surely help me in my future exam.BTW i am from india and also a Jee aspirant basically i have my exam in next week and surely i am clearing concepts😂.

[@sachinnpalz]

Thanku and love from 🇮🇳 India

[@creativeminds2709]

In last prganic compound you missed OH group

[@TenaciousOPS]

Great video! Thank you so much for clarifying.

[@igniteverse9605]

THANKS A LOT FOR EXPLAINING MAAM❤❤👍👍

[@divinefavourinnocent8122]

For the third one you said that attachment down was a metal group or something but for the second one you said it was CH3 how do we differentiate it

[@RoxiHulet]

“Methyl” not “metal”.
CH3 is called “methyl”.

[@chelsea2168]

I really wish the stupid end card wasn't blocking the end of the last example :(

[@gopalradhay6473]

🥰🥰🥰🥰 from india.... thank you mam ... it helps me a lot...

[@thomashalm8585]

i thought the Carbon having a hydroxyl group in the last example is also chiral.

[@dr.mohamedrefat8729]

What's name of application, you use.

[@pitkamatka]

Hi! Can we draw the conclusion that all carbon atoms that are part of a ring, have 4 single bonds, and have only one H are chiral carbons?

[@RoxiHulet]

No, you can’t. If two of those non-H single bonds are to identical groups (such as, two methyl groups) the carbon would be achiral.

[@adonisefits1880]

Did you forget the chiral carbon connected to the OH group on the last molecule?

[@MUSKANGUPTA-mf3kn]

Great explanation ma'am✌️✌️

[@user-gv6zu4qs2g]

Amazing explanation,thanks ❤

[@RoxiHulet]

You're welcome 😊

[@aparnakumari2576]

Just ..sharp😊

[@samsanjay658]

Ma'am it's was too helpful for me 😭😭😭😭 thanks 👍🙂🐧♥️

[@sunil86860]

why Ch3 to consider? ?

[@aadirana9506]

Thanks ma'am

[@Utpal-fj4hk]

Mam u said sp2 hybridised carbon is never chiral okk,
But what About a 2 degree nitrogen which has diffrent carbon chains on both sides and 1 loan pair.
So is the nitrogen chiral or not?
Its very confusing as the nitrogen is sp2 hybridised as well.

[@RoxiHulet]

That nitrogen is actually sp3 hybridized. :) sp3 hybrid atoms have 4 total bonds / lone pairs. A secondary nitrogen has 3 bonds and 1 lone pair.

[@Utpal-fj4hk]

@@RoxiHulet no mam,
A 3 degree nitrogen has 3 bonds and 1 loan pair and I'm talking about a 2 degree nitrogen which has 2 bonds
And 1 loan pair.

[@RoxiHulet]

@@Utpal-fj4hk oh, I understand. We use different classification systems. The system I use is that a tertiary nitrogen or carbon has 3 bonds to C chains and one lone pair or hydrogen
If you only have 2 bonds to carbon and one lone pair, the atom cannot be chiral. In order to be chiral you must have a total of 4 things (bonds or lone pairs) around the atom.

[@Utpal-fj4hk]

@@RoxiHulet oh okk
Understood, thanks for clearing my doubt.
But why do we have different classification system for a same concept?

[@archit2894]

Wow, this video definitely helped👍👍 great explanation

[@harshans7712]

Thanks a lot maam , it was clear and easy to understand and it was so helpful ☺

[@chandankumarAAA6383]

For different atched group chiral carbon

[@BlessingsKamwendo-zp2fd]

Nice explanation

[@makaam2594]

Is chilarity can be checked on atoms like cl , br ??

[@dryashiduhan1798]

U are doing great job thnksss ❣️

[@umashankarpatel6147]

Adorable explanation mam 💗

[@shrutililhare1671]

Thank you so much mam it helped me lot 😊

[@nosaka_yuuma252]

Thank you 👍🏻

[@daviddayanidhi6217]

Excellent!!

[@noyaaaaa_]

I am a little confused with the last example... the 2nd and 3rd substituents you said they both eventually have an immediate connection to a benzene ring so wouldn't that be achiral because they're not unique? Can you explain please

[@RoxiHulet]

They have different paths to the benzene ring, which makes them unique.

[@noyaaaaa_]

@@RoxiHulet ahhh thank you!

[@serrenamalake7040]

Thank you ,it really was helpful 🤗

[@unknown....789]

Very helpful 😊👌 thank you so much

[@Airforcegirl818]

Amazing explanation ❤

[@kishoreprasath1967]

Helpful ❣

[@RoxiHulet]

Glad you think so!

[@Relaxforawhile-xx8ho]

Thank you ma'am thanks a lot

[@kashifabbasiabbasi5388]

How we determine chirality. Carbon rings structure

[@RoxiHulet]

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[@RoxiHulet]

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[@RoxiHulet]

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[@sushreesweta999]

Thanks you so much ❤

[@shaswattiwari9351]

Thanks

[@user-dq3uf2hr8i]

شكرا

[@adelinarodriguezzahrt8363]

Thank you!

[@熊熊-e3w]

Thank u so much !!

[@nakitaovo7575]

Thankyou so much, this is very useful

[@davidina3675]

Thanks a lot

[@AdityaYadav-ri8dt]

Very very helpful mam.

[@HelpYourHealthNow]

Thank you mam for creating this video for us

[@khalil7800]

Thank you

[@kunwarsa5288]

there is 5 chiral carbons in the last structure
You have ignored the carbon which is attached to OH group
This carbon is sp³ hybridised and have 4 different substituents

[@RoxiHulet]

Yes this has been acknowledged multiple times in the comments.

[@kunwarsa5288]

@@RoxiHulet your way of explaining topics is fantastic
Love from INDIA ❤️❤️❤️❤️

[@adrijadasgupta2052]

5:04 how can we find hidden hydrogen

[@bidohdez]

carbon likes to make 4 bonds always. in skeletal drawings H's are not drawn thats why its "hidden"

[@adrijadasgupta2052]

@@bidohdez oh thanks

[@watevaa1234567]

Big thanks

[@nirupmamehta9792]

Thanks for"" chiral in alkenes... ""

[@BoshraAsadi-jx2gc]

I couldn't understand the last one

[@oluwaseyiakinyemi8253]

Thanks so much💕

[@LongTimeKnowledge]

Thanks teacher
I am indian my name is Rahmat ali

[@pathikondageetha6382]

Thank you mam

[@sohammandal4498]

Thank you so much maam 👍👍👍

[@shivamdiwakar5437]

❤️❤️ thankyou soo mch

[@Sanju786]

600 hundred 🎉❤

[@varnijakannan8124]

THANK YOUUUU

[@pathikondageetha6382]

Where are you from mam

[@pz_faizan]

I think Common doubt for many (also for me 😁) have been solved at 6:25

[@kiLLerkip049]

Jee and Neet students Attendance here 🙋

[@RoxiHulet]

I don't know what that means but I'm happy you all are here!! :)

[@rashmikumari5144]

​@@RoxiHulet jee is a exam that is joint entrance examination .it is most difficult exam all over the world which produces Engineer ...ceo of Google is one the best example

[@samsanjay658]

@@RoxiHulet one of the world most toughest exams that is what called JEE. And thanks 👍

[@priyanshisaxena1175]

I got confused as hell💀💀

[@shashi6853]

Jee aspirants 🗿

[@RoxiHulet]

@@shashi6853 🤞 good luck! 🍀

[@shashi6853]

@@RoxiHulet thank you mam this was so helpful

[@rahulravikumar8762]

What is the software ur using

[@mariamukherjee3646]

goodnotes 5

[@MunzirReshid]

Asass

[@Preachingyou]

Bliss in disguise 🥸 ! Thank God I found this video, or else I could have gone for jee without revising chirality !! Thank you 😊