Related Products of 33332-25-1, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 33332-25-1, name is Methyl 5-chloropyrazine-2-carboxylate belongs to pyrazines compound, it is a common compound, a new synthetic route is introduced below.
Methyl 5-chloropyrazine-2-carboxylate (100 mg, 0.579 mmol, 1 eq), 1-methylpiperazine (65 mul, 0579 mmol, 1 eq) and potassium carbonate (161 mg, 1.159 mmol, 2 eq) were heated in DMSO in a microwave reactor at 120 C. for 5 min. The reaction mixture was poured onto an SCX column (10 g), washed with methanol then eluted with 2M ammonia in methanol. The reaction was repeated as above with methyl 5-chloropyrazine-2-carboxylate (150 mg), 1-methylpiperazine (98 mul) and potassium carbonate (241 mg) in DMSO (3 ml). The product fractions from both reactions were combined and evaporated under vacuum to afford the product as a yellow solid (283 mg, 83%). 1H NMR (399.902 MHz, DMSO) delta 2.23 (s, 3H), 2.42 (t, 4H), 3.73 (t, 4H), 3.82 (s, 3H), 8.38 (d, 1H), 8.66 (d, 1H). MS: m/z 237 (MH+).
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, Methyl 5-chloropyrazine-2-carboxylate, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; ASTRAZENECA AB; US2008/153812; (2008); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem