Talk:IUPAC nomenclature of organic chemistry

1-butene or but-1-ene

I have been tought that it is 1-butene and after looking at other pages, such as Isomers of butylene, that form is used on wikipedia as well. So is one more correct than the other or are they interchangable and both correct under IUPAC? 70.49.20.43 22:53, 3 March 2006 (UTC)[reply]

I too have been taught in school over the past 4 years that the numbering of suffixes comes before the root and not in the middle (eg 1-butene, 1,2-ethanediol, 2,2-dibromo-1-hexene.) I have only ever seen the root-number-suffix format used in much older textbooks, but I'm far from an expert... Besides, hexa-1-ene just sounds goofy :P Bungeh 07:59, 7 March 2006 (UTC)[reply]

Halogens missing from functional group precedence chart

I know halogens need to be on the list. I just don't know where. I've looked through two chemistry books and the IUPAC website, but still can't get a straight answer.

Plz fiz thx!!!1

Possible misnaming of 4-(1-methylpropyl)octane

It appears to me that the compound 4-(1-methylpropyl)octane is misnamed. My reading of this page is that the correct name for that compund is 3-methyl 4-propyloctane (based on rule C-13.11a). Evand 05:40, 14 Aug 2004 (UTC)

You're indeed correct -- the methyl substituent on the supposed "branch" is closer to the end than the "propyl group" (which is erroneously shown as the beginning end), so the "branch" should really be an ending. I'm going to edit the page in a sec to comment out the picture until it can be recreated, and I'll try to come up with a better example for the paragraph immediately below it. I also intend to ping the image's creator in some way, although I'm not yet sure how I'll do so. --Waldo

Propan-2-one is redundant. It should simply be propanone. Why? If there were such a thing named propan-1-one it would be misnamed... that's proponal. Perhaps an organic chemist can drop in an fix what otherwise is a great set of graphics and information. User:sturmde

IUPAC Nomenclature is much broader than you represent

The scope of IUPAC Nomenclature recommendations is very large and you've barely scratched the surface here. I'd recommend that you consider renaming the article to something that better reflects the scope of information presented, or provide an overview of the entire IUPAC Nomenclature universe. Even the scope within organic chemistry is much broader than what you present here .. see http://www.iupac.org/reports/provisional/abstract04/favre_310305.html. For the full flavor of what IUPAC encompasses see http://www.iupac.org/divisions/index.html. Courtland 02:24, 2005 Mar 8 (UTC)

Why is it 2,2 dimethyl-propane?

Don't both the methyl groups have to go on the carbon 2? Shouldn't it be dimethyl propane? This just says, take a propane molecule and stick two methyl groups on it...

If you choose carbon 1 or 3 then you lengthen the longest chain. Thus you must stick them both on carbon 2.

Appreciate this may be obviously flawed, I have just started chemistry at school.

Richard

I'm reasonably certain you are correct. It's also called neopentane. Evand 03:13, 15 September 2005 (UTC)[reply]

Yes, my fault I'm afraid. There are a few errors like this in the article mostly due to my bad memory/research. Feel free to change it to, say, 2,2-dimethylbutane and I'll try to update the related image in my copious free time. -- DrBob 19:08, 15 September 2005 (UTC)[reply]

Ok, thanks for your help. Will have a go at fixing it.

Richard

As our article points out, the preferred name for this compund is indeed neopentane. Physchim62 (talk) 18:42, 19 February 2006 (UTC)[reply]

sugars

where do they fit in the nomenclature?

The nomenclature of sugars is separate from that of other organic compounds: the detailed recommendations can be found here. Physchim62 (talk) 18:42, 19 February 2006 (UTC)[reply]