Great video. However, at around 10:15 you state that the alkene has more priority than the alkyne. This led me to believe that an alkene ALWAYS takes priority over alkynes, which is not the case. Most of the time alkynes take priority instead of alkenes except when both have the potential to be carbon 1 of the long chain. I think it would be beneficial to make this clear. :)
I really enjoy your videos however at 12:21 you state you need to include the alkyne in the carbon chain when numbering. However, if the longest carbon chain is a alkane. you number the alkane and the alkyne becomes the subsistent. resulting in 4-ethynyloctane !! :)
Great vid as always! But at 10:38 shouldn't it be 5-hexyn-1-ene since hexene takes priority over hexyne in this case and, thus, becoming the final suffix...?
Both names are valid, but the IUPAC system recommends using the name that gives the functional group the lowest possible number. So, in this case, 3-butyn-2-ol seems right. I know OH is hydroxl too but I like to assume it represents the more common Alcohol fxn group
In this case, where the number would be the same, you have to choose the name that has the lower number first. Since chloro needs to be listed first, numbering the Cl first would give it a lower number.
You need the longest chain that has the highest priority functional group (alkyne in this case). The longest chain is 7 carbons. Now, the only substituent is the propyl group. Starting from the alkyne side, it must be on carbon 3
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Great video. However, at around 10:15 you state that the alkene has more priority than the alkyne. This led me to believe that an alkene ALWAYS takes priority over alkynes, which is not the case. Most of the time alkynes take priority instead of alkenes except when both have the potential to be carbon 1 of the long chain. I think it would be beneficial to make this clear. :)
Thank you this was just what I was looking for. Didn't even have to watch the whole video
Was looking for this too since in my book I’m seeing an example of alkynes being prioritized while numbering. Strange
This is exactly what I was looking for
The functional group that gives the name of parent chain has higherpriority
Thanks
This was alkynes of help 😆😆🤣🤣😭😭😭
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I really enjoy your videos however at 12:21 you state you need to include the alkyne in the carbon chain when numbering. However, if the longest carbon chain is a alkane. you number the alkane and the alkyne becomes the subsistent. resulting in 4-ethynyloctane !! :)
Alkyne has a higher priority than alkane, that’s why it’s 3-propyl-1-heptyne
You are a life saver 😢
Thank so much for helping me
I Really love this video.
It helps me a lot....
اتابعك من العراق لقد استفدتُ جدا اشكرك حقا 😊
But do you understand English
@@KamranUllah-uw8ht
Our second language is English so we do understand it
@@enlnr wow that's good to know..and are you medical or engineering student ?
Thank you so much, you're a hero
I'm havin Alkynes of trouble with this one
Pharmacy student from Algeria, thank you 🤍
Ene comes first before yne.. if both of the alkene and alkyne are present in the substance
𝑖'𝑚 confused with that part 𝑖 thought triple bond always had more priority
thank u for helping me ... great job keep going❤👍
great job keep it going
Thanks you have helped me a lot
Thank you so so much❤
Great vid as always! But at 10:38 shouldn't it be 5-hexyn-1-ene since hexene takes priority over hexyne in this case and, thus, becoming the final suffix...?
Nope. Its an enyne so its name correctly
I'm confused about that too
𝑖'𝑚 confused too like doesn't triple bond have more priority
Perfect as usual!!
At 6:10 u said diisopropylacetylene, I understood you meant diisopropylacetylne. Thanks for your help.
at 9:40 can it also be written as nonadiacetylene
I have a question at 9:46, isn't there an ethyl group after the 7th Carbon (CH3CH2) why isn't that included in the IUPAC name for this example?
Because that's part of the parent chain and not a substituent
THANK YOU!
thanks my dude
HI! Why do we prioritise OH more than alkynes? Thank you
libretext has a great page on this topic, go check it out
Thank you sir
Great sir
10:15 what? my teacher said alkyne has more priority
I do not like the way the alkynes are written out, it it better if you put them in skeletal structure
At 11:29 can 3-butyn-2-ol be called as 2-hydroxy-3-butyne? If no why not?
Both names are valid, but the IUPAC system recommends using the name that gives the functional group the lowest possible number. So, in this case, 3-butyn-2-ol seems right. I know OH is hydroxl too but I like to assume it represents the more common Alcohol fxn group
where did the "e" disappear while naming compounds that have "ene" or "yne"
I have a question, is there such Alkyne with 1 carbon? Such as CH0?
No that is impossible, the smallest alkyne is ethyne C2H2
@@rwayle the reason being is due to the valency of your proposed molecule, to add onto what Ryan had said.
At 5: 49, what is the IUPAC name of diphenyl acetylene?
Just need help 😊
wikipedia it and itll tell you
9:30 why is it not called 7-methyl-1,5-dinonyne?
Because you have to put the di, tri, tetra. etc before the suffixes, so it will be nonadiyne
@11.27 shouldnt it be 2-butanol-3-yne since you said the alcohol has higher priority ?
The one being put as priority tends to be at the back
@@amscsk1658 so when he says the alkene takes priority over the alkyne, shouldn't it be 5-hexyn-1-ene and not 1-hexen-5-yne?
why I find on the internet that alkene actually does gain priority over alkyne..
Why the answer in 10:42 cannot be 1 - hexene - 5 - hexyne?
Because that's not how IUPAC say the name should be formed. You've got hex in there twice which doesn't make sense.
On 8:10 why cant you number putting the Cl first, and follow that path that would still make 6 carbons as well ? Help please!
In this case, where the number would be the same, you have to choose the name that has the lower number first. Since chloro needs to be listed first, numbering the Cl first would give it a lower number.
Thanks g
Pls can someone pls explain the last example on this video. The 3- propyl. Why is it propyl
You need the longest chain that has the highest priority functional group (alkyne in this case). The longest chain is 7 carbons. Now, the only substituent is the propyl group. Starting from the alkyne side, it must be on carbon 3
Make sure the longest chain includes the functional group and if you look at the other side there are 3 carbons making it propyl
13:13
how do you know which group they belong? like the isoprpyl
It depends on the bond like if its single them its ane, if its double then its ene, but if its triple then its yne
what is the common name for 2-chloro-5-methyl-3-hexyne. because you didn't state it there.
sometimes there isnt one.
@1.25 why are the ch3 not part of the longest C-chain though ?
Good explanation but needs to focus
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