Comments on: Table of Functional Group Priorities for Nomenclature https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/ Tue, 06 Aug 2024 04:56:14 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: eldwin cheung https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-702250 Tue, 06 Aug 2024 04:56:14 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-702250 i think there is a typo: 4-oxo-pentanoic acid should actually be 4-oxopentanoic acid.
hyphen before pentanoic acid should be removed

]]> By: alice kim https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-691739 Tue, 23 Apr 2024 16:06:50 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-691739 thanks, if there are cycloalkyl group, ethyl, and isopropyl group, which one takes the priority to get low number?

]]> By: Viraj K https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-686646 Tue, 05 Mar 2024 17:18:15 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-686646 What will the IUPAC name of this compound be?(— is triple bond, — is double bond and – is single bond)

CH—C-CHβ‚‚-CHβ‚‚-C–OH

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-649886 Fri, 10 Mar 2023 18:24:06 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-649886 In reply to Vaibhav.

Lowest locant. 3-hydroxynonan-4-one

]]> By: Vaibhav https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-649880 Fri, 10 Mar 2023 15:27:21 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-649880 I have a question.
Will lowest locant rule will be prefered or the order of preference of functional group will be preferred. I mean H3CCH2(OH)CHCOCH2CH2CH2CH2CH3.
will be named 3-hydroxynonan-4-one(locant rule followed)
Or 7-hydroxynonan-6-one (order of preference followed)

]]> By: Best 17 Alkene Group List - Edu Learn Tip https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-639545 Wed, 05 Oct 2022 11:28:28 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-639545 […] Quote from the source: … […]

]]> By: Ammar https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-634873 Mon, 08 Aug 2022 19:03:44 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-634873 Example: 1-Bromo-3-Methoxypropane. Example*: 1-butoxy-5-chloropentane. Example: 1-Ethoxy-3-iodopropane. Example*: 1-Chloro-3-propoxypropane. Example: 1-Chloro-3-nitropropane Example*: 1-iodo-3-nitropropane *Examples does not contradict the ALPHABETICAL rule.]]> But if you look at the examples below ”Carefully” you will notice, numbering is as simple as we’re trying to make it.πŸ˜‚

Example: 1-Bromo-3-Methoxypropane.
Example*: 1-butoxy-5-chloropentane.

Example: 1-Ethoxy-3-iodopropane.
Example*: 1-Chloro-3-propoxypropane.

Example: 1-Chloro-3-nitropropane
Example*: 1-iodo-3-nitropropane

*Examples does not contradict the ALPHABETICAL rule.

]]> By: Ammar https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-634738 Sat, 06 Aug 2022 15:00:45 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-634738 Example: 1-Bromo-3-Methoxypropane. Example*: 1-Chloro-5-butoxypentane. Example: 1-Ethoxy-3-iodopropane. Example*: 1-Chloro-3-butoxypropane. Example: 1-Chloro-3-nitropropane Example*: 3-iodo-1-nitropropane *Examples just contradict the ALPHABETICAL rule. I think it depends on the OXIDATION State of the Carbon. 'If a substituent Oxidises the Carbon more than other substituent on the same position, then numbering will start from that substituent which Oxidises more.'πŸ™‚]]> But if you look at the examples below ”Carefully” you will notice, numbering isn’t as simple as we’re trying to make it.πŸ˜‚

Example: 1-Bromo-3-Methoxypropane.
Example*: 1-Chloro-5-butoxypentane.

Example: 1-Ethoxy-3-iodopropane.
Example*: 1-Chloro-3-butoxypropane.

Example: 1-Chloro-3-nitropropane
Example*: 3-iodo-1-nitropropane

*Examples just contradict the ALPHABETICAL rule.

I think it depends on the OXIDATION State of the Carbon.
‘If a substituent Oxidises the Carbon more than other substituent on the same position, then numbering will start from that substituent which Oxidises more.’πŸ™‚

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-634725 Sat, 06 Aug 2022 10:35:50 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-634725 In reply to Ammar.

In the case of halogens and ethers it’s the alkane which has highest priority (the suffix) and the halogens / alkoxy groups are prefixes that will be ranked based on alphabetical order. Depending on whether or not the halogen substituent is above or below the alkoxy alphabetically is the key thing.

]]> By: Ammar https://www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/#comment-634657 Fri, 05 Aug 2022 13:19:32 +0000 https://www.masterorganicchemistry.com/?p=1353#comment-634657 Why Ether is given less priority than HALO group?
I’ve seen other sites showing ether group above halogens.
Please clarify my doubt.

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