RE: ORGLIST:IUPAC name

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From: Ilya Avrutov (iavrutov$##$dalton.com)
Date: Thu Mar 04 2004 - 08:51:20 EST


I may agree with 1st part of Gerry's objection (about 1,3-benzene ring):
I also had doubt about it, but didn't find clear rule about it in IUPAC
regulations. But the second part of the objection (that only systems
with maximum number of noncumulative double bonds could be named with
fusion nomenclature) is not correct (see rule A-23.5 of IUPAC
nomenclature). What is correct only, that basis name should include also
the number and positions of double bonds (for example not heptadecane,
but heptadeca-6,10,15-triene).

Best regards
Ilya

-----Original Message-----
From: everybody-admin$##$orglist.net [mailto:everybody-admin$##$orglist.net]
On Behalf Of G.P.Moss
Sent: Wednesday, March 03, 2004 1:25 PM
To: cmelende$##$ftalmex.com
Cc: everybody
Subject: Re: ORGLIST:IUPAC name

Contrary to Ilya's message this compound cannot be named as totally by
fusion nomenclature as there is a 1,3-benzene unit. Furthermore fusion
is
only to a component with the maximum number of noncumulative double
bonds.
If you want a fusion name I would suggest:

5,6,7,8,9,10,15,16,22,23-decahydro-17,21-methenodibenzo[b,j][1,5,8,12]te
tra-
azacyclononadecine

However phane nomenclature is much easier, shorter and clearer. This
gives:

2,6,9,12-tetraaza-1,7(1,2),4(1,3)-tribenzenacyclotridecaphane

For details of the relevant IUPAC documents see:

www.chem.qmul.ac.uk/iupac/fusedring/
www.chem.qmul.ac.uk/iupac/phane/

Gerry Moss
________________________________________________________________

Dr GP Moss Telephone: +44 20 7882
4838
Department of Chemistry
Queen Mary University of London Facsimile: +44 20 7882
7794
Mile End Road
London E1 4NS, United Kingdom E-mail:
g.p.moss$##$qmul.ac.uk

IUPAC chemical nomenclature database:
http://www.chem.qmul.ac.uk/iupac/
IUBMB biochemical nomenclature database:
http://www.chem.qmul.ac.uk/iubmb/

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