86
C-N
H2 H
8
7
N5
~
2 Substituted Systems
1,4,5,8-Tetrahydronaphthalene
7,8-Dihydrodibenzo [d,f] [1,3] diazo cine
In contrast, epoxides, ozonides, and certain halogen derivatives are characterized by anionized name forms of the added atoms (or groups of
atoms) placed behind the stem terms. It should be noted, though, that
retention of this method is not recommended when other types of nomenclature (substitutive or heterocycle nomenclature) permit unambiguous
simpler names.
o
/ \
Ph - C - C - Ph Stilbene oxide
I
I
H H
Br Br
I I
Ph-C-C-Ph
I
I
H H
Stilbene dibromide
The designation ozonide should be used only if no exact structure of the
compound in question is known; otherwise a heterocyclic name is to be
preferred.
2
1
0-0
HI
\
Me-C, /CH2
3-Methyl-l,2,4-trioxolane
3 0 4
For compounds of the amine oxide and nitrile oxide type and analogous
systems with oxidized heterocenters (above all heterocyclic systems)
additive nomenclature alone offers reasonable names.
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