91476-80-1, name is 5,6,7,8-Tetrahydroimidazo[1,2-a]pyrazine, belongs to pyrazines compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. HPLC of Formula: C6H9N3
5,6,7,8-Tetrahydroimidazo[1 ,2-a]pyrazine(l17) (4.53 g, 36.8 mmol) and triethylamine (6.16 mL, 44.2 mmol) were dissolved in dichloromethane (DCM) (200 mL) and treated with di-tert-butyl dicarbonate (10.25 mL, 44.2 mmol). The solution was stirred at RT for 48 h and concentrated in vacuo to afford a crude oil. The crude product was purified by flash chromatography (Isolera, 340 g, 0-100% 2M ammonia in methanokdichloromethane (1 :9)/dichloromethane) to afford 3 fractions. Fraction 2 was identified by LC/MS as containing desired product. The residue was dissolved in ethyl acetate (300 ml), washed with saturated sodium bicarbonate solution (50 ml_), water (2 x 50 ml_), brine (50 ml_), dried over anhydrous sodium sulfate and concentrated to afford product in 6.77g. LC/MS = 224 (M+H)+, retention time = 0.71 minutes (2 minute method (high pH)).
The synthetic route of 91476-80-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; GLAXO GROUP LIMITED; DEAN, David Kenneth; MUNOZ-MURIEDAS, Jorge; SIME, Mairi; STEADMAN, Jon Graham Anthony; THEWLIS, Rachel Elizabeth Anne; TRANI, Giancarlo; WALL, Ian David; WALTER, Daryl Simon; WO2010/125101; (2010); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem