Uniqueness of synonyms

[GoogleCodeExporter]

I'm not sure if this is a bug or is unintentional, but there are three 
duplicate synonyms in the RXNO ontology.  These are "Huisgen reaction" and 
"Huisgen cycloaddition" that are synonyms of both RXNO:0000018 and 
RXNO:0000269, and "Gattermann reaction" which is a synonym of both RXNO:0000022 
and RXNO:0000139.  This many-to-one mapping makes it impossible to map the 
string "Huisgen reaction" to a single RXNO concept. I'm not sure if this is a 
design constraint, but it would be a very convenient property.

Revealingly, the same ambiguity appear to exist on wikipedia:
http://en.wikipedia.org/wiki/1,3-Dipolar_cycloaddition
http://en.wikipedia.org/wiki/Azide_alkyne_Huisgen_cycloaddition

Original issue reported on code.google.com by ro...@nextmovesoftware.com on 22 Jul 2011 at 9:58

[GoogleCodeExporter]

Hi Roger,

In the coming check-in I've made sure that in the Huisgen case the synonym is 
of NARROW scope and the child is of BROAD scope. I've also tidied up the 
parentage.

Sadly it seems that "Gattermann reaction" on its own is ambiguous and I don't 
propose changing it unless most strings "Gattermann reaction" turn out to refer 
to the other one, or there's a generally accepted name for RXNO:0000139.

Best wishes,
Colin.

Original comment by batchelorc@rsc.org on 7 Jan 2014 at 3:55