Lissy14
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This is either 2-hydroxybut-2-ene or But-2-en-2-ol

But I have no clue which one!


(How do you know when to use 'ol' and when to use 'hydroxy' when naming alcohols?)
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samcrossley28
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(Original post by Lissy14)
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This is either 2-hydroxybut-2-ene or But-2-en-2-ol

But I have no clue which one!


(How do you know when to use 'ol' and when to use 'hydroxy' when naming alcohols?)

but-2-en-2-ol
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hannaheliza27
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Hydroxy is used before the main part, only if there is another functional group at the end
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Lissy14
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(Original post by hannaheliza27)
Hydroxy is used before the main part, only if there is another functional group at the end
Does that rule apply for all functional groups at the end? For instance alkene, carboxilic acid? Or just some?
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Lissy14
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(Original post by samcrossley28)
but-2-en-2-ol
Great thanks! Do you know why though?
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ByronicHero
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Agamemnon?
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hannaheliza27
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(Original post by Lissy14)
Does that rule apply for all functional groups at the end? For instance alkene, carboxilic acid? Or just some?
It works for example like 2-hydroxypropanal, for if you had an O-H group and a =O on the second carbon, because you can't say propan-2-ol-al
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Lissy14
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(Original post by ByronicHero)
Agamemnon?
Pardon? ^-^
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ByronicHero
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(Original post by Lissy14)
Pardon? ^-^
I was suggesting a name....
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Metanoia
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(Original post by Lissy14)
Great thanks! Do you know why though?
When there are more than 1 functional groups, there is a need to rank the functional groups.

http://www.masterorganicchemistry.co...-nomenclature/

Since alcohol is the higher rank here, the molecule would be an "-ol". Conversely, if there is a functional group higher than alcohol, the alcohol group would be treated as prefix and named as "hydroxyl".
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Lissy14
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(Original post by Metanoia)
When there are more than 1 functional groups, there is a need to rank the functional groups.

http://www.masterorganicchemistry.co...-nomenclature/

Since alcohol is the higher rank here, the molecule would be an "-ol". Conversely, if there is a functional group higher than alcohol, the alcohol group would be treated as prefix and named as "hydroxyl".
That's great! Thank yoooooooooooooooooooooou!!! ^-^
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Lissy14
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(Original post by hannaheliza27)
It works for example like 2-hydroxypropanal, for if you had an O-H group and a =O on the second carbon, because you can't say propan-2-ol-al
Ok
Thanks!
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