22047-25-2, name is Acetylpyrazine, 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. COA of Formula: C6H6N2O
Step A: 1-(Pyrazin-2-yl)ethylamine To a solution of 2-acetylpyrazine (206.7 mg, 1.7 mmol) and ammonium acetate (1.3 g, 17 mmol) in methanol (5.0 mL) was added sodium cyanoborohydride (75 mg, 1.19 mmol) followed by 3 A molecular sieves (0.85 g). The reaction mixture was stirred for 1 day at room temperature. It was acidified to pH 2 with concentrated HCl then filtered, and the solid was washed with methanol and H2O. The filtrate was concentrated in vacuo. The residue was dissolved in water and was made basic (pH 10-12) with 5N NaOH. The aqueous layer was extracted with CH2Cl2 several times while maintaining ~pH 10. The combined extracts were dried over Na2SO4, filtered, and concentrated the solvent in vacuo. The crude product was purified by preparative thin layer chromatography eluding with 5% 2M NH3 in MeOH/CH2Cl2 to give 74 mg of the title compound. 1H NMR (500 MHz, CDCl3): 8.61 (s, 1H); 8.5 (d, J=1.6 Hz, 1H); 8.44 (d, J=1.6 Hz, 1H); 4.21 (q, J=6.8 Hz, 1H); 1.46 (d, J=6.8 Hz).
The synthetic route of 22047-25-2 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Merck & Co., Inc.; US6498165; (2002); B1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem