50: Finding chiral carbons in organic molecules

Practice finding chiral carbons in a variety of organic molecules

[@EnglishByORCJA]

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. ❣

[@brjtney]

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

[@calebheide2694]

Fantastic quick breakdown with good variety of examples.

[@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!!!

[@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!

[@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

[@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!

[@xesthetic1]

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

[@Medholic]

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

[@foysalahammed8765]

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

[@jusleejolm1042]

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

[@sbar3362]

You are the BEST ROXI!!!

[@easylearning6531]

So much surprising fantastic explanation .praise from india

[@divyanshi492]

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

[@TenaciousOPS]

Great video! Thank you so much for clarifying.

[@YuvrajSingh-nu8vr]

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

[@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

[@eflam3374]

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

[@RoxiHulet]

Yay!! :)

[@igniteverse9605]

THANKS A LOT FOR EXPLAINING MAAM❤❤👍👍

[@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 :(

[@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

[@daviddayanidhi6217]

Excellent!!

[@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?

[@zerminaaziz2924]

last structure has 5 chiral center

[@MUSKANGUPTA-mf3kn]

Great explanation ma'am✌️✌️

[@archit2894]

Wow, this video definitely helped👍👍 great explanation

[@opufy]

you're really good at your job!

[@RoxiHulet]

Thank you!

[@Airforcegirl818]

Amazing explanation ❤

[@tinodhliwayo9542]

Thank you for making this concept clear

[@RoxiHulet]

You're very welcome!

[@umashankarpatel6147]

Adorable explanation mam 💗

[@sachinnpalz]

Thanku and love from 🇮🇳 India

[@aparnakumari2576]

Just ..sharp😊

[@dryashiduhan1798]

U are doing great job thnksss ❣️

[@adelinarodriguezzahrt8363]

Thank you!

[@harshans7712]

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

[@unknown....789]

Very helpful 😊👌 thank you so much

[@serrenamalake7040]

Thank you ,it really was helpful 🤗

[@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😂.

[@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.

[@nosaka_yuuma252]

Thank you 👍🏻

[@user-gv6zu4qs2g]

Amazing explanation,thanks ❤

[@RoxiHulet]

You're welcome 😊

[@HelpYourHealthNow]

Thank you mam for creating this video for us

[@nakitaovo7575]

Thankyou so much, this is very useful

[@sushreesweta999]

Thanks you so much ❤

[@shrutililhare1671]

Thank you so much mam it helped me lot 😊

[@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

[@makaam2594]

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

[@BlessingsKamwendo-zp2fd]

Nice explanation

[@davidina3675]

Thanks a lot

[@gopalradhay6473]

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

[@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”.

[@AdityaYadav-ri8dt]

Very very helpful mam.

[@Relaxforawhile-xx8ho]

Thank you ma'am thanks a lot

[@aadirana9506]

Thanks ma'am

[@samsanjay658]

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

[@dr.mohamedrefat8729]

What's name of application, you use.

[@khalil7800]

Thank you

[@oluwaseyiakinyemi8253]

Thanks so much💕

[@watevaa1234567]

Big thanks

[@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!

[@shaswattiwari9351]

Thanks

[@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.

[@shivamdiwakar5437]

❤️❤️ thankyou soo mch

[@varnijakannan8124]

THANK YOUUUU

[@sohammandal4498]

Thank you so much maam 👍👍👍

[@user-dq3uf2hr8i]

شكرا

[@thomashalm8585]

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

[@kishoreprasath1967]

Helpful ❣

[@RoxiHulet]

Glad you think so!

[@chandankumarAAA6383]

For different atched group chiral carbon

[@adonisefits1880]

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

[@pathikondageetha6382]

Thank you mam

[@creativeminds2709]

In last prganic compound you missed OH group

[@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?

[@Sanju786]

600 hundred 🎉❤

[@nirupmamehta9792]

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

[@pathikondageetha6382]

Where are you from mam

[@chelsea2168]

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

[@LongTimeKnowledge]

Thanks teacher I am indian my name is Rahmat ali

[@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

[@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 👍

[@BoshraAsadi-jx2gc]

I couldn't understand the last one

[@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 ❤️❤️❤️❤️

[@rahulravikumar8762]

What is the software ur using

[@mariamukherjee3646]

goodnotes 5

[@MunzirReshid]

Asass

[@pz_faizan]

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

[@canisbluffy]

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