Some common heterocyclic compound, 5424-01-1, name is 3-Aminopyrazine-2-carboxylic acid, molecular formula is C5H5N3O2, 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. Formula: C5H5N3O2
Add 3-aminopyrazine-2-carboxylic acid (50.0 g, 369.4 mmol) to a solution of N-bromosuccinimide (61.2 g, 377.3 mmol) and dimethylformamide (236.3 g, 3.2 mole) at 0 C. After 1 hour at room temperature, an orange solid is formed. Wash the solid residue with ethyl acetate (500 mL) and discarded it. Dry the organic phase with sodium sulfate, filter, and concentrate under reduced pressure to yield the title compound as a white solid (32.0 g, 146.7 mmol, 41%). ES/MS m/z (79Br/81Br) 217.1/219.0 (M+H)
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5424-01-1, its application will become more common.
Reference:
Patent; ELI LILLY AND COMPANY; CIFUENTES-GARCIA, Marta Maria; GARCIA-PAREDES, Maria Cristina; (34 pag.)WO2018/194885; (2018); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem