Alkane and cycloalkane nomenclature II | Organic chemistry | Khan Academy

Correction: 2,2,6,6,7-pentamethyloctane is the correct name. I put a dash instead of a comma between the 6 and the 7 on the video. Created by Jay.
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[@thugricanz]

I prefer listening to this guy then my teacher.

[@foxhound-0]

Eduardo lugo 😂😂

[@demonvoidvoid6765]

I think assigning 1-ethyl-3,3 dimethyl would have higher values compared to 3-ethyl-1,1-dimethyl.

[@trishasales714]

At 7:35 shouldn't the one be on the right hand side as opposed it to being on top? If you numbered the one on the side it is 1-ethyl-3,3 dimethyl. And 1 is smaller than 3. (That's what you did for the few first examples when you figured out which numbering was the best) I thought the priorities for a cycloalkane are start at a branch, main chain is the cyclic shape, closest branch then biggest branch.
Thank you.

[@baggofficial]

Thank you for making this, its easy to learn now

[@moisahsannoh2649]

Perfect,u have made my day

[@FaceByLilly_MUA]

Thank you again!

[@HorusFlint]

Well done, excellent explanation :)

[@kayeaguilarasuncion8922]

Currently watching this to further understand the lesson sent by my teacher which i obviously cant comprehend without someone to help me

[@damaklinenyaboke2536]

its very good way of learning

[@zakmes8901]

hi, can you tell the programs you are using to record a video and that to writing and drawing molecules. thank you.

[@saiphislam9396]

7:50 someone explain please :( why not 1 ethyl 33 dimethyl cyclohexane

[@yurielsai4562]

Same problem for me

[@blsdbyndmsr]

This was super helpful!!! Thank you! But Can you please explain the first point of difference rule again when you are naming the cyclohexane with 2 substituents???

[@collinskipkemoi9799]

Love it a good explanation

[@kaifeereza7906]

Explane very well

[@surajbherwani8960]

toooooooooooo goooooood!

[@the86driver]

Dude, seroiusly i'll just come search your videos when we have lectures on this chapter and so on.

[@__.financiaga._]

6:18 sum of lowest locant rule????

[@chhawideshwal9921]

Tqq

[@malo3287]

naming cycloalkanes with only one substituent does not need numbering for example 1-ethylcyclohexane is just ethylcyclohexane

[@brianbdw11]

Thank you! What’s your name? You’re so awesome.

[@SurenderKumar-uf5iu]

Jay

[@user0118]

last 30 seconds... what? haha very very helpful though thanks!

[@maybelater2650]

Dope

[@nahnahnah30]

solid solid

[@abdelazimelbialy7527]

i think the correct name will be 2,3,3,7,7-pentamethyloctane as the sum of the numbers is 22 but in the case of 2,2,6,6,7-pentamethyloctane, the sum will be 23 .... and we are looking for the lowest number . am i right ??

[@1461BordoMavi1461]

I agree

[@zzurg7416]

you can put that as your answer but it will be marked wrong and you would confuse chemists :)

[@secondbelarus]

I was watching yesterday and noticed it, too. That with the sum of 22 looks correct to me.

[@13saubarnichakraborti64]

he used the locants rule

[@aaryadeshpande1621]

@@zzurg7416 but that doesn't answer the question. Chemistry teachers say that it is the lowest sum. Unless they are referring to something that is not in IUPAC, then that makes sense.

[@ozkancil8620]

at 6:04 isnt supposed to be 2,3,3 not 2,2,6?

[@zzurg7416]

nope, it goes by comparing congruent numbers in the list not by the sum of the numbers or the largest number.

[@13saubarnichakraborti64]

he used locants rule

[@giftnetshirenzheni1926]

In cycloalkanes it does work in sums.

[@jillianekayeabarabar]

Can't understand it wtf😭