425379-16-4, name is 2-Bromo-3-fluorobenzonitrile, belongs to nitriles-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Recommanded Product: 2-Bromo-3-fluorobenzonitrile
To a solution of 2-bromo-3-fluorobenzonitrile (10.0 g, 50 mmol) in sulfuric acid (22 mL) was added nitric acid (69%, 4.82 mL, 75 mmol) dropwise, maintaining the temperature between 5-10 C. The reaction mixture turned red-orange at the end of the addition. The reaction mixture was allowed to warm up to RT and was stirred for 1 hour. The reaction mixture was then poured onto crushed ice. The products were extracted with EtOAc (2 x 100 mL). The combined organic layers were washed with brine (50 mL), dried (MgS04), filtered and concentrated under reduced pressure. The residue was suspended in MeOH (50 mL) and the mixture was briefly heated at reflux. After cooling to RT, a pale yellow precipitate was collected by vacuum filtration, washed with a small amount of MeOH and dried in the vacuum oven. The material was recrystallized from MeOH to afford 1 .77 g (14% yield) of the title compound as a yellow powder.1H NMR (500 MHz, DMSO-d6) delta [ppm] 8.77 (dd, J = 2.5, 1 .4 Hz, 1 H), 8.65 (dd, J = 8.3, 2.5 Hz, 1 H).LCMS (Analytical Method A): Rt = 1 .1 1 min, mass ion not observed.
The synthetic route of 425379-16-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; BAeURLE, Stefan; DAVENPORT, Adam, James; STIMSON, Christopher; CARR, James, Lindsay; BUBERT, Christian, Abingdon; MARLIN, Frederic, Jacques; NAGEL, Jens; SCHMIDT, Nicole; ROTGERI, Andrea; IRLBACHER, Horst; (378 pag.)WO2018/114783; (2018); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts