5,7-Dichloro-1,8-naphthyridin-2-amine, cas is 131998-24-8, it is a common heterocyclic compound, the naphthyridine compound, its synthesis route is as follows.
. 5,7-dichloro-l,8-naphthyridin-2- amine (compound 1.2, 1.007 g, 4.70 mmoi) was dissolved in TFA (40 mL), then cooled 0 C. Sodium nitrite (1.623 g, 23.5 mmol) was added portion-wise at 0 C with stirring. The mixture was allowed to warm to room temperature and stirred for 16 hours. The solvent was removed under reduced pressure and the residue was dissolved in water (20 niL), stirred for 5 minutes then carefully brought to pH =7 with NaOH (2 M). The resulting precipitated solids were filtered, washed with water and dried under reduced pressure to give compound 1.3 (864 mg, 85%). m/z (ES+) 215 (M+H)~.
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Reference£º
Patent; 3-V BIOSCIENCES, INC.; WAGMAN, Allan S.; JOHNSON, Russell J.; CAI, Haiying; HU, Lily W.; (195 pag.)WO2017/31427; (2017); A1;,
1,8-Naphthyridine – Wikipedia
1,8-Naphthyridine | C8H6N2 – PubChem