4.2 Naming Complex Substituents | Organic Chemistry

[@nuriamarco4169]

I just have to say that you have a very nice way of teaching. Very quiet voice that relax my stressed mind but not boring at all. :)

[@ChadsPrep]

Thank you!

[@marvelnduka4883]

Chad: however if all of a sudden I do that (Adds a weird chain to the ethyl)…..“we have a problem”😂 Bro really makes the science fun😂

[@marvelnduka4883]

Damn I have this inner peace of mind and joy when I see a video of chad with an explanation of what I’m looking for….rest assured i know damn well my search for understanding that topic in this hay stack of confusing videos on KZbin is finally come😂…thanks man for all you do❤

[@ChadsPrep]

@@marvelnduka4883 Glad the channel is of so much value to you - Thanks for the kind words and Happy Studying!

[@clarachavez6952]

This video really clarified my questions about Ochem nomenclature. I want to thank you for your service.

[@ChadsPrep]

You're welcome!

[@alyssaapodaca1390]

Best in the game! Thank you so SO SO much Chad!!

[@ChadsPrep]

You are welcome, Alyssa - thanks for your comment.

[@LexiTRexy]

thank you so much - the alphabetizing has always tripped me up and you covered EVERY possible question and scenario I had for that. you are truly amazing thank you :)

[@Guchagucha120]

You really gave me hope in myself. Thank you so much for your service.

[@ChadsPrep]

You're very welcome - Happy Studying!

[@crazyblah867]

My exam is in 2 days, and this was a major help. Thanks a million!

[@ChadsPrep]

So glad to hear it :) Good luck in the exam!

[@AndreaC081]

Thank you so much, I've been struggling with this for a couple days (:

[@ChadsPrep]

Glad it helped, Andrea!

[@IsaacPhalula]

This is something else and great

[@ChadsPrep]

Thank you

[@jeremycouncil9632]

Very well put together video and I actually have a question. When would you use bis or tris in nomenclature?

[@daniellagarcia1552]

when ordering alphabetically you ignore the prefixes that come with a dash ( sec- , tert- , ect) and the numeric prefixes (di, tri, etc). In your example on 18:46 dimethylpropyl actually goes after diethyl

[@ChadsPrep]

Hello Daniella! For simple substituents (like ethyl) you ignore the numeric prefix (di, tri, etc.) when determining alphabetical order. But for complex substituents (like 1,2-dimethylpropyl), you use the first letter in the name of the complex substituent even if it is part of a numerical prefix (I didn't make the rules). So diethyl, being simple, is alphabetized under the letter 'e.' But 1,2-dimethylpropyl, being complex, is alphabetized under the letter 'd.' Like I said, I didn't write the rules. Hope this helps!

[@OvadiaBabakhanov]

That is incorrect

[@OvadiaBabakhanov]

When putting them in order you first put sec then tert and then iso in the case if butyl

[@OvadiaBabakhanov]

You said that when you have many different butyl groups that are all under b

[@fatimamanzar4963]

Near the end of the video at 22:58, should isobutyl be placed in parentheses since it is a complex substituent, or is it not because it is a common name and not a systematic name? Thanks.

[@anthonysorendino]

Hey, Chad! What textbook are you using for your course?

[@evanapolinar6448]

Yuhrrr

[@EdisonvsTesla]

????😶​@@evanapolinar6448

[@heyheymymy4362]

Is the carbon attached to the longest chain really always No. 1 in the substituent? Because Chemsketch software tells me that the substituent you are looking at in 16:36 is called (3-methylbutan-2-yl)

[@badalrakshit9200]

Sir if there is a functional group in the complex substituent, then the numering will be done from the functional group or the carbon attached to the parent chain.

[@ericmora6287]

For your first example at 18:50 isn't it backwards since diethyl is closer to the alphabet than dimethyl or am I missing something?

[@sciencenerd7639]

Nah the way Chad has it is right. Remember that for the simple substituents the numerical prefix does not count for alphabetical order and that for the complex substituents the numerical prefix does count for alphabetical order.

[@biosavat9475]

I cant thank you enough for this sir.

[@ChadsPrep]

You are very welcome!

[@pixelwarrior6156]

Although this was released 2 years ago... It still helps alot better than any other videos. I have been trying to search such videos but they did not explain as good as you. Thank you.

[@ChadsPrep]

You're welcome - Glad the channel is helping you.

[@mrudhulmanuvs]

Good sir, we use prefix such as bis tris and tetrakis if the exact same complex substituent is present in 2 or more locations. My question is do we consider bis tris etc while choosing the first alphabet to order the parts of the name of molecule.

[@sciencenerd7639]

the rule about using numerical prefixes for alphabetization of the complex substituent but not the simple substituent is blowing my mind🤣🤣🤣

[@ChadsPrep]

Glad to hear it!

[@wendy4313]

Thank you !

[@ChadsPrep]

You're welcome!

[@adwelllibbohole717]

Awesome explanation.....keep it up

[@ChadsPrep]

Thank you, Adwell - will do!

[@priscillacifuentes3016]

how do you manage to make this not so painful? thank you!!!

[@ChadsPrep]

Glad to hear the video was helpful, Priscilla - we have lots of material here so hopefully you will continue to learn without pain. Good luck with your studies!

[@saniadastagir5981]

Thank you so much! you literally laid out and gave an example of every weird question we might come across. I feel like I have a PhD in this topic now 😂

[@ChadsPrep]

Excellent and Wow!

[@VincentSalman]

Amazing honestly

[@ChadsPrep]

Thank you

[@simayyksl]

cannot thank you enough ❤for

[@ChadsPrep]

You're very welcome!

[@michaelkelley3430]

I wish chad was teaching my Ochem course.

[@ChadsPrep]

Thank you.

[@abdoulazizdabo9064]

Thank you

[@ChadsPrep]

You're welcome

[@henokmoges8519]

Thank you

[@ChadsPrep]

You're welcome.

[@mukhtarullah8590]

Very helpful God bless you Respected sir Mashallah

[@ChadsPrep]

Thanks!

[@almacyrenable]

Thank u sososo much

[@ChadsPrep]

You're welcome sososo much Alma! Glad you found it helpful!

[@QuicksilverBL3DE]

Superior!

[@ChadsPrep]

Thank you!

[@rubabhasan8750]

1,2-dimethylpropyl common name is tert-pentyl

[@rubabhasan8750]

Mashaallah,you did very amazing!

[@szxnv]

saved me

[@ChadsPrep]

Cool

[@winningversity]

You saved me😭

[@ChadsPrep]

Glad the videos/channel are helping!

[@TimilehinOjo-Adebayo-rg6ik]

I don't understand why you have 1,1dimethyl and the other one is ethyl like they both look alike 13:54

[@ChadsPrep]

Are you asking about isopropyl versus tert-butyl groups?

[@TimilehinOjo-Adebayo-rg6ik]

@@ChadsPrep yes that's what I am asking about I'm confused

[@ChadsPrep]

Sorry for the delay - I didn't see your reply - count the carbons and you will see the tert-butyl group has one more CH3 group attached!

[@umuulan.nanaman]

i love you

[@ChadsPrep]

🙏

[@mukhtarullah8590]

Plz your video so helpful but Your speeking so fast plzzz speek slowly ?

[@ChadsPrep]

I get that a lot - sorry! Fortunately you can control the speed of the video at the bottom in the Settings and choose a slower speed. Happy Studying!