Related Products of 21524-39-0, These common heterocyclic compound, 21524-39-0, name is 2,3-Difluorobenzonitrile, 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.
Step A: 2-Azido-5-fluorobenzonitrile (1q): A mixture of NaN3 (1.17 g, 1.8 mmol) and difluorobenzonitrile (0.5 g, 3.6 mmol) in DMA (60 mL) was heated at 100 C. for 30 minutes. The mixture was next diluted with water (300 mL) and ether (300 mL). The organic layer was washed three times with water and brine. The organic layer was dried (MgSO4) and concentrated. The crude product was purified by flash column chromatography using ether:hexane (1:5) as eluent to give the desired product (1q) as white crystals (0.3 g, 53% isolated yield). 1H NMR (400 MHz, CDCl3) delta 7.38-7.31 (m, 2H), 7.27-7.18 (m, 1H).
The synthetic route of 21524-39-0 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Munson, Mark; Kim, Youngboo; Groneberg, Robert D.; Rizzi, James; Rodriguez, Martha; Kim, Ganghyeok; Vigers, Guy; Rao, Chang; Balachari, Devan; US2004/180896; (2004); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts