Analyzing the synthesis route of 5-Amino-2,3-difluorobenzonitrile

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Amino-2,3-difluorobenzonitrile, its application will become more common.

Related Products of 1247885-41-1,Some common heterocyclic compound, 1247885-41-1, name is 5-Amino-2,3-difluorobenzonitrile, molecular formula is C7H4F2N2, 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.

5-bromo-2,3-difluorobenzonitrile (0274) At room temperature, copper bromide (6.1 g, 42.80 mmol) was added to the solution of 5-amino-2,3-difluorobenzonitrile (660 mg, 4.28 mmol) in acetonitrile (33 mL). The reaction mixture was then added dropwise by a solution of tert-butyl nitrite (4.4 g, 42.77 mmol) in acetonitrile (33 mL) over 1.5 h period at room temperature. The resulting mixture was stirred for 3 h at room temperature and then treated with water (50 mL). The resulting solution was extracted with ethyl acetate (150 mL×3). The organic phases were combined, washed with brine and dried over sodium sulfate. The solvent was removed under reduced pressure and the residue was purified by flash chromatography eluting with ethyl acetate in hexane (0% to 10% gradient) to yield 5-bromo-2,3-difluorobenzonitrile as light yellow solid (660 mg, 71%).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Amino-2,3-difluorobenzonitrile, its application will become more common.