Organic chemistry
Why is the IUPAC name propane-1,2,3-triol but not propan-1,2,3-triol? Does the e make a difference? Because Butan-2-ol doesn’t have an e
Or is it because the propane has an OH group on every carbon while butan-2-ol only has the one?
Or is it because the propane has an OH group on every carbon while butan-2-ol only has the one?
Reply 1
If the molecule only has one OH group then there's no e. If there's more than one then you'll have an e.
e.g. butane-1,1-diol vs butan-2-ol
Doesn't matter where the OH group is or if they're on every carbon - just if there's more than one or not.
I doubt you would get marked down for switching them up in any exam though because using an "e" or not wouldn't make your structures ambiguous at all - which tends to be all that the markers are concerned about.
e.g. butane-1,1-diol vs butan-2-ol
Doesn't matter where the OH group is or if they're on every carbon - just if there's more than one or not.
I doubt you would get marked down for switching them up in any exam though because using an "e" or not wouldn't make your structures ambiguous at all - which tends to be all that the markers are concerned about.
Reply 2
20
Original post by Maddi-18
Why is the IUPAC name propane-1,2,3-triol but not propan-1,2,3-triol? Does the e make a difference? Because Butan-2-ol doesn’t have an e
Or is it because the propane has an OH group on every carbon while butan-2-ol only has the one?
Or is it because the propane has an OH group on every carbon while butan-2-ol only has the one?
Try saying both names without the numbers...
propanetriol vs propantriol
butanol vs butaneol
The 'e' is added when the suffix begins with a consonant.
Reply 3
Maddi-18
OP
1
Original post by dontknowlol
If the molecule only has one OH group then there's no e. If there's more than one then you'll have an e.
e.g. butane-1,1-diol vs butan-2-ol
Doesn't matter where the OH group is or if they're on every carbon - just if there's more than one or not.
I doubt you would get marked down for switching them up in any exam though because using an "e" or not wouldn't make your structures ambiguous at all - which tends to be all that the markers are concerned about.
e.g. butane-1,1-diol vs butan-2-ol
Doesn't matter where the OH group is or if they're on every carbon - just if there's more than one or not.
I doubt you would get marked down for switching them up in any exam though because using an "e" or not wouldn't make your structures ambiguous at all - which tends to be all that the markers are concerned about.
Thank you! Google was not helping me at all 😂
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