for the second example, why wouldn't the complex substituent be a trimethyl? doesn't the sixth line count as a methyl? sorry for being confusing, it's my first day learning organic chem
The sixth carbon is part of the complex substituent's parent chain. Remember, the parent chain is the LONGEST chain of carbons. If we treated it as a trimethyl, the parent would only be 5 carbons long instead of 6. As a side note, the parent chain of the entire molecule is the 11-carbon ring as mentioned in the video. However, complex substituents are essentially mini molecules attached to the bigger molecule, and so they get their own parent chain to allow us to properly name them. Hope this helps!
Good question. In the first example, if we make the parent chain include that ethyl group off carbon #3, then that new 9-carbon parent chain will have 6 total substituents branching off instead of the 7 off the current parent chain. When we have this situation, the chain with the most branching wins. I went over a similar situation in example 2 of my previous video. th-cam.com/video/cdrLRXsOtKA/w-d-xo.html Hope this helps!
Good question. Because it is easier to use, we prefer to use cis/trans when possible. However, you could instead designate each chiral center as (R) or (S) if you wanted to and you would still correctly describe this molecule. Keep in mind that there are some instances when cis/trans would not work on rings, such as if you have three chiral centers that point in different directions, etc. In those cases, you would need to use (R) or (S). Hope this helps!
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i learned more from this video than i did with the first four weeks of our semester istg
OMG I was looking for thisss!
Thanks for the concept🤗🤗
Very helpful examples thank you
Glad it was helpful!
Good film :)
Thankyou..❤️
for the second example, why wouldn't the complex substituent be a trimethyl? doesn't the sixth line count as a methyl? sorry for being confusing, it's my first day learning organic chem
The sixth carbon is part of the complex substituent's parent chain. Remember, the parent chain is the LONGEST chain of carbons. If we treated it as a trimethyl, the parent would only be 5 carbons long instead of 6.
As a side note, the parent chain of the entire molecule is the 11-carbon ring as mentioned in the video. However, complex substituents are essentially mini molecules attached to the bigger molecule, and so they get their own parent chain to allow us to properly name them.
Hope this helps!
Thank you so much!
Is cyclo hexyl a complex substituents??
Please help
No, it is not a complex substituent unless the cyclohexyl had other groups attached to it, such as a methyl, bromine, etc.
@@YourScienceTutor thank you so much
Why isn’t the longest chain off one of the other branches that make a 9 chain?
Good question. In the first example, if we make the parent chain include that ethyl group off carbon #3, then that new 9-carbon parent chain will have 6 total substituents branching off instead of the 7 off the current parent chain. When we have this situation, the chain with the most branching wins.
I went over a similar situation in example 2 of my previous video.
th-cam.com/video/cdrLRXsOtKA/w-d-xo.html
Hope this helps!
@@YourScienceTutor thanks!
Why don’t we label the chiral centers with R and S notation for the second structure?
Good question. Because it is easier to use, we prefer to use cis/trans when possible. However, you could instead designate each chiral center as (R) or (S) if you wanted to and you would still correctly describe this molecule. Keep in mind that there are some instances when cis/trans would not work on rings, such as if you have three chiral centers that point in different directions, etc. In those cases, you would need to use (R) or (S).
Hope this helps!
Unsaturated = alkene and alkynes
Alkanes are saturated brother
Correct, good catch!