Synthetic Route of 2302-25-2, A common heterocyclic compound, 2302-25-2, name is 4-Bromo-1H-imidazole, molecular formula is C3H3BrN2, its 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.
[00622] To a solution of 197-2c (1.0 g, 6.8 mmol, 1.0 eq) in DMF (10.0 mL) was added K2C03 (1.4 g, 10.2 mmol, 1.5 eq) and 197-2b (1.2 g, 7.4 mmol, 0.8 mL, 1.1 eq). The mixture was stirred at 80 C for 2 h. TLC indicated 20% of 197-1 was remained, and one major new spot with lower polarity was detected. The reaction mixture was diluted with H20 (20.0 mL), extracted with EtOAc (10.0 mL * 3). The combined organic layers were washed with brine (30.0 mL), dried over Na2S04, filtered and concentrated under reduced pressure to give a residue. The residue was purified by column chromatography (Si02) to give 197-2a (500.0 mg, 2.1 mmol, 31% yield). 1HNMR (400 MHz, CDC13) 7.38 (s, 1H), 6.94 (s, 1H), 4.69-4.61 (m, 2H), 4.30-4.20 (m, 3H), 1.35-1.26 (m, 3H).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; VIVACE THERAPEUTICS, INC.; KONRADI, Andrei W.; LIN, Tracy Tzu-Ling Tang; (396 pag.)WO2018/204532; (2018); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem