Note: The correct name for the structure at 4:25 is 3-penten-2-ol. You may drop the final "e" when naming an alkene that is not the highest priority functional group on the molecule.
(5:09) how did you determine the information that would go in the brackets? I was slightly confused how you determined the number of unique carbons on the chain.
I was wondering whether you made a mistake on counting the first carbon at 2:11? Since the alcohol has the higher priority than alkane, therefore, I think that you should count the first carbon from the left? At 4:25, I think that it should be 3-penten-2-ol because I can search nth on the internet when I type 3-pentene-2-ol
Thanks for watching and asking! There is not a mistake in the example at 2:11. The longest continuous carbon chain is three carbons in length. The alcohol can only exist on carbon 2, no matter which direction you begin counting in. At 4:25, I will concede your point. That “e” might only be used at the end of a name and not in the middle of one. Since the highest priority functional group is an alcohol, we can drop the final “e” when naming the alkene group.
The correct name for the structure at 4:25 is 3-penten-2-ol. You may drop the final "e" when naming an alkene that is not the highest priority functional group on the molecule.
Carbon 4 is a bridgehead carbon. Remember, in the molecular name, the numbers in the brackets specify how many carbons are unique to each ring portion. Those numbers are not locants.
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Thanks for asking, that “e” might only be used at the end of a name and not in the middle of one. Since the highest priority functional group is an alcohol, we can drop the final “e” when naming the alkene group.
Yes, the correct name for the structure at 4:25 is 3-penten-2-ol. You may drop the final "e" when naming an alkene that is not the highest priority functional group on the molecule. Thanks for catching it!
