254-60-4, 1,8-Diazanaphthalene is a naphthyridine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,254-60-4
Synthesis of 2-[1-(2-tert-butyl-6-chloro-5-methyl-pyrimidin-4-yl)-piperidin-4-yl]-[1,8]naphthyridine 20 ml of dimethylacetamide and 5 ml (17.8 mmoles) of diisopropylethylamine are added into a single-necked flask containing 1.5 g (6.84 mmoles) of 2-tert-butyl-4,6-dichloro-5-methyl-pyrimidine and 1.46 g (6.84 mmoles) of 2-piperidin-4-yl-[1,8]naphthyridine. This mixture is heated at 100 C. overnight. The next day 0.2 equivalent of naphthyridine is added and the mixture is heated for another 6 hours. The reaction mixture is returned to ambient temperature before concentrating to dryness. The residue obtained is taken up in a mixture of water, ethyl acetate and a saturated solution of sodium bicarbonate. The organic phase is separated and the aqueous phase reextracted with ethyl acetate. The collected organic phases are dried over magnesium sulphate then the solvent is evaporated off under reduced pressure (2 kPa). The residue is chromatographed on silica gel eluding with a gradient of heptane-ethyl acetate (70-30) to heptane-ethyl acetate (50-50). 1.77 g of expected product is obtained. TLC: Rf=0.50 [silica gel, eluent heptane-ethyl acetate (50-50). 1H-NMR (CDCl3): delta 1.37 (s, 9H, tert-butyl); 2.1 (m, 1H, cyclopropyl); 2.15 (m, 4H, N-CH2–CH–CH2); 2.27 (s, 3H, CH3); 3.1 and 4.05 (2m, 4H, CH2–N–CH2); 3.25 (m, 1H, N-CH2-CH2–CH2-CH2); [(7.48; 8.18; 9.12), 3m, 5H, naphthyridine]. MS: 396 (MH+).
As the paragraph descriping shows that 254-60-4 is playing an increasingly important role.
Reference£º
Patent; Proskelia SAS; US2008/58348; (2008); A1;,
1,8-Naphthyridine – Wikipedia
1,8-Naphthyridine | C8H6N2 – PubChem