3.9 Hydrazines and their Derivatives
141
OH OH
Ph, "N
N"
N, "Ph
'N
2,7-Bis(phenyldiazenyl)naphtalene-l,8-diol
Symmetrical bis- and poly-azo compounds with peripheral senior functions are treated as assemblies of identical components (see Section 2.2.6).
H0 3 S l f ' )
OH OH
~S03H
~ -;' Nto' -' :: N~ ~
N
I
N
~
~
syst.: 4,4'- [( 1,8-Dihydroxynaphthalene-2,7 -diyl)bis( diazendediyl) lbisbenzenesulfonic acid
CA: 4,4' -(Dihydroxynaphthalene-2,7 -diylbisazo )bisbenzenesulfonic acid
If azoxy functions must be expressed as prefixes even IUPAC abandons the
path of systematic virtue and insists on the traditional ... ONN ... and
... NNO ... infixes although in these cases too complete systematization is
feasible.
3.9
trad.: l-Carboxynaphthalene-2-0NN-azoxybenzene
IUPAC/CAS: 2-(Phenyl-NNO-azoxy)naphthai ene-I-carboxylic acid
syst.: 2-(l-Oxo-2-phenyl-U S -diazenyl)naphthalene-l-carboxylic acid
Ph-2=2~c02H 4-(l,2-Dioxo-2-phenyl-US,LP-diazenyl)
~
benzoic acid
Hydrazines and their Derivatives
Simple substitution products of hydrazines (with the exception of acylsubstituted ones) are generally still named as such and, where necessary,
in the form of ... hydrazino ... prefixes, although here again the change to