Litvinov, V. P. et al. published their research in Advances in Heterocyclic Chemistry in 2006 | CAS: 253-50-9

2,6-Naphthyridine (cas: 253-50-9) belongs to naphthyridine derivatives. Six naphthyridine isomers exist, based on the positions of the nitrogen atoms; they can be in the 1,5, 1,6, 1,7, 1,8, 2,6, or 2,7 positions. Imidazonaphthyridines have been prepared through a ‘one-pot’ three-component ‘domino’ reaction between the keto-ester, acrolein, and ethylenediamine in presence of 4 Å molecular sieves. The corresponding thiazolonaphthyridine is obtained from a similar reaction using 2-aminoethanethiol and Dowex basic anion-exchange resin.Computed Properties of C8H6N2

Advances in the chemistry of naphthyridines was written by Litvinov, V. P.. And the article was included in Advances in Heterocyclic Chemistry in 2006.Computed Properties of C8H6N2 This article mentions the following:

A review in which an anal. is made of the synthesis and properties of 6 isomeric heterocyclic systems containing 2 fused pyridine rings with different mutual arrangements of N atoms, naphthyridines (pyridopyridines, diazanaphthalenes). In the experiment, the researchers used many compounds, for example, 2,6-Naphthyridine (cas: 253-50-9Computed Properties of C8H6N2).

2,6-Naphthyridine (cas: 253-50-9) belongs to naphthyridine derivatives. Six naphthyridine isomers exist, based on the positions of the nitrogen atoms; they can be in the 1,5, 1,6, 1,7, 1,8, 2,6, or 2,7 positions. Imidazonaphthyridines have been prepared through a ‘one-pot’ three-component ‘domino’ reaction between the keto-ester, acrolein, and ethylenediamine in presence of 4 Å molecular sieves. The corresponding thiazolonaphthyridine is obtained from a similar reaction using 2-aminoethanethiol and Dowex basic anion-exchange resin.Computed Properties of C8H6N2

Referemce:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem