Diazanaphthalenes are a class of
aromatic heterocyclic chemical compounds that have the formula C
8H
6N
2. They consist of a
naphthalene
Naphthalene is an organic compound with formula . It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromati ...
double ring in which two of the carbon atoms have been replaced with nitrogen atoms. There are ten positional
isomer
In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers.
Iso ...
s, which differ by the locations of the nitrogen atoms.
The group consist of two subgroups:
*four ''benzodiazines'' with both N atoms in one ring:
cinnoline,
quinazoline,
quinoxaline, and
phthalazine
Phthalazine, also called benzo-orthodiazine or benzopyridazine, is a heterocyclic organic compound with the molecular formula C8H6N2. It is isomeric with other naphthyridines including quinoxaline, cinnoline and quinazoline.
Synthesis
Phthalazi ...
*six ''naphthyridines'' with one N atom in each ring
Isomers
References
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