Diazanaphthalenes are a class of aromatic heterocyclic chemical compounds that have the formula C8H6N2. They consist of a naphthalene double ring in which two of the carbon atoms have been replaced with nitrogen atoms. There are ten positional isomers, which differ by the locations of the nitrogen atoms.

The group consist of two subgroups:

Isomers

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Names Structure Subgroup CAS RN
1,2-diazanaphthalene
(cinnoline)
  benzodiazine 253-66-7
2,3-diazanaphthalene
(phthalazine)
  benzodiazine 253-52-1
1,3-diazanaphthalene
(quinazoline)
  benzodiazine 253-82-7
1,4-diazanaphthalene
(quinoxaline)
  benzodiazine 91-19-0
1,7-naphthyridine
(1,7-diazanaphthalene)
  naphthyridine 253-69-0
1,8-Naphthyridine
(1,8-diazanaphthalene)
  naphthyridine 254-60-4
2,7-naphthyridine
(2,7-diazanaphthalene)
  naphthyridine 253-45-2
1,6-naphthyridine
(1,6-diazanaphthalene)
  naphthyridine 253-72-5
1,5-naphthyridine
(1,5-diazanaphthalene)
  naphthyridine 254-79-5
2,6-naphthyridine
(2,6-diazanaphthalene)
  naphthyridine 253-50-9

References

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  1. ^ Desmond J. Brown, Jonathan A. Ellman, Edward C. Taylor: The Chemistry of Heterocyclic Compounds, The Naphthyridines, John Wiley & Sons, 2007.
  2. ^ Paudler, William W.; Kress, Thomas J. (1968). "Naphthyridine chemistry. IX. Bromination and animation of the 1,X-naphthyridines". The Journal of Organic Chemistry. 33 (4): 1384–1387. doi:10.1021/jo01268a018.