486424-37-7, A common compound: 486424-37-7, name is 3-Amino-6-bromopyrazine-2-carboxylic acid, belongs to Pyrazines compound, it can change the direction of chemical reaction, and react with certain compounds to generate new functional products. A new synthetic method of this compound is introduced below.
1- (3-DIMETHYLAMINOPROPYL)-3-ETHYLCARBODIIMIDE hydrochloride (0.68 g, 3.5 mmol) was added in one portion to a stirred suspension of 2-MORPHOLIN-4-YLETHANAMINE (0.422 g, 3.2 mmol), 3-amino-6-bromopyrazine-2-carboxylic acid (0.64 g, 3.0 mmol; described in: Ellingson, R. C.; Henry, R. L. J. Am. Chem. Soc. 1949,2798-2800), and 1- hydroxybenzotriazole hydrate (0.48 g, 3.5 mmol) in acetonitrile (25 mL) at 0 C. The cooling bath was removed and stirring was continued at room temperature for 7 h. The solid was filtered off, washed with acetonitrile and purified by column chromatography on silica using methylene CHLORIDE/METHANOL/TRIETHYL amine, (95: 5: 0.1), to give 0.68 g (69% yield) of the title compound : 1H NMR (DMSO-d6, 400 MHz) 8 8.53 (m, 1 H), 8.34 (s, 1 H), 8.68 (br s, 2 H), 3.57 (t, J = 5 Hz, 4 H), 3.37 (q, J = 7 Hz, 2 H), 2.47 (q, J = 7 HZ, 2 I-, 2.40 (m, 4 H); MS (ES) M/Z 330 and 332 (M+1).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 3-Amino-6-bromopyrazine-2-carboxylic acid, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; ASTRAZENECA AB; WO2004/55009; (2004); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem