Related Products of 6905-47-1, These common heterocyclic compound, 6905-47-1, name is 2-Amino-6-methoxypyrazine, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
To a solution of (9S)-2-(2-methylpyridin-4-yl)-7,8,9,10-tetrahydro-6H-5,9-methanopyrido[2,3-b][1,4]diazocine (0.6 g, 2.253 mmol) in Tetrahydrofuran (THF) (30 mL) stirred under nitrogen at room temperature was added triethylamine (1.884 mL, 13.52 mmol) and triphosgene (0.669 g, 2.253 mmol). Then reaction mixture was stirred at room temperature for 30 minutes. 6-methoxypyrazin-2-amine (0.846 g, 6.76 mmol) was added at rt. Then the reaction mixture was stirred at 65 C. for 16 hr. The reaction mixture was cooled to room temperature and concentrated under reduced pressure and was partitioned between water (20 mL) and EtOAc (50 mL). Organic layer was separated and was dried over anhydrous Na2SO4, filtered and filtrate was evaporated to give crude as brown solid (TLC eluent: 100% EtOAc: Rf-0.3; UV active). The crude was purified by column chromatography using neutral alumina and was eluted with 50% EtOAc in Hexane to afford pure (9S)-N-(6-methoxypyrazin-2-yl)-2-(2-methylpyridin-4-yl)-8,9-dihydro-6H-5,9-methanopyrido[2,3-b][1,4]diazocine-10(7H)-carboxamide (0.220 g, 0.526 mmol, 23.34% yield) as a off-white solid, LCMS (m/z): 418.3 [M+H]+. 1H NMR (400 MHz, CDCl3): delta 13.64 (s, 1H), 9.45-8.78 (m, 1H), 8.60 (dd, J=5.3, 0.8 Hz, 1H), 7.96 (d, J=0.5 Hz, 1H), 7.80 (ddd, J=5.3, 1.7, 0.7 Hz, 1H), 7.62 (dt, J=1.8, 0.7 Hz, 1H), 7.59 (s, 1H, 7.57 (s, 1H), 7.46 (d, J=8.0 Hz, 1H), 5.04 (t, J=2.6 Hz, 1H), 3.84 (s, 3H), 3.57-3.26 (m, 3H), 3.15-2.91 (m, 1H), 2.64 (s, 3H), 2.28 (d, J=14.3 Hz, 1H), 2.12-1.85 (m, 1H), 1.43 (s, 2H)
Statistics shows that 2-Amino-6-methoxypyrazine is playing an increasingly important role. we look forward to future research findings about 6905-47-1.
Reference:
Patent; BLUM, Charles A.; Caldwell, Richard Dana; Casaubon, Rebecca; Disch, Jeremy S.; Fox, Ryan Michael; Koppetsch, Karsten; Miller, William Henry; NG, Pui Yee; Oalmann, Christopher; Perni, Robert B.; Szczepankiewicz, Bruce G.; White, Brian; US2015/152108; (2015); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem