From: Jonathan Brecher (jsb2$##$camsoft.com)
Date: Sat May 03 2003 - 21:59:21 EDT
At 7:48 PM +0200 5/3/03, samarium Steiner wrote:
>I was looking for that in Houben-Weyl (Methods for Organic Chemistry). They
>also call selenophene "selenole" and tellurophene "tellurole" (as all the
>other five-membered rings with other elements, e.g. stannole, plumbole, aurole
>a.s.o.). Thus, shouldn't they be named 2-selenolyl and 3-tellurolyl etc.?
>there was only one hint for that, which wasn't quite clear for me.
Unfortunately when it comes to nomenclature, there is no such thing
as "should" by itself. There are many, many different systems for
generating chemical names, and although some are more-preferred than
others, there is no single "right" answer for most questions.
Names like "selenole" and "tellurole" are known as Hantzsch-Widman
name, and indeed those are perfectly valid names according to the
Hantzsch-Widman system. For more about that naming system, see
http://www.chem.qmul.ac.uk/iupac/hetero/HW.html. Note that "aurole"
is *not* an acceptable name under the Hantzsch-Widman system. Your
original question included selenophene as an example, and I based my
answer on various nomenclature systems that would find selenophene to
be an acceptable name.
Since there are many different acceptable names for these (and indeed
most) compounds, if you are producing names for your own use, you can
choose to use whatever most appeals to you. If you are trying to
look up those structures in a different source, such as Houben-Weyl,
the only useful approach is to use the names that they they expect,
regardless of what any source might think about those names in
general.
Jonathan Brecher
CambridgeSoft Corporation
jsb$##$cambridgesoft.com
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