Adding a certain compound to certain chemical reactions, such as: 95470-42-1, name is Ethyl 2-bromo-4-methyl-1H-imidazole-5-carboxylate, belongs to imidazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 95470-42-1, Safety of Ethyl 2-bromo-4-methyl-1H-imidazole-5-carboxylate
Ethyl 2-bromo-4-methyl-1H-imidazole-5-carboxylate (2.75 g, 11.8 mmol) was dissolved in DMF (20 mL), potassiumcarbonate (3.26 g, 23.6 mmol) and 2,5-dichloronbenzyl bromide (3.4 g, 14.2 mmol) were added thereto, and thereaction mixture was stirred at 90°C for 3 hours. Water (50 mL) was added after the reaction was complete, andthe reaction mixture was extracted twice with ethyl acetate (50 mL). After washing with a saturated aqueous sodiumchloride solution, the organic phase was dried over sodium sulfate. After concentration under reduced pressure,the residue was purified by silica gel column chromatography to obtain ethyl 2-bromo-1-(2,5-dichlorobenzyl)-4-methyl-1H-imidazole-5-carboxylate (1.72 g) : 1H-NMR (CDCl3) delta: 7.34 (1H, d, J=8.8 Hz), 7.20 (1H, dd, J=8.8, 2.4Hz), 6.40 (1H, d, J=2.4 Hz), 5.60 (2H, s), 4.25 (2H, q, J=7.2 Hz), 2.56 (3H, s), 1.27 (3H, t, J=7.1 Hz); ESI-MS m/z=391(M+H)+.
At the same time, in my other blogs, there are other synthetic methods of this type of compound, Ethyl 2-bromo-4-methyl-1H-imidazole-5-carboxylate, and friends who are interested can also refer to it.
Reference:
Patent; Teijin Pharma Limited; MARUYAMA, Akinobu; TAKEUCHI, Susumu; TAKAHASHI, Yoshimasa; (30 pag.)EP3144306; (2017); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem