Related Products of 175137-46-9,Some common heterocyclic compound, 175137-46-9, name is 5-Cyclopropyl-1H-pyrazol-3-amine, molecular formula is C6H9N3, 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.
The solution of 3,5-difluoro-2-nitrobenzonitrile (Method 16; 5.80 g, 31.5 mmol), 5- cyclopropyl-lH-pyrazol-3-amine (4.66 g, 37.8 mmol) and DIEA (5.5 ml, 31.5 mmol) in THF (100 ml) was stirred at 25 C for 20 hours. The solvent was removed under reduced pressure and the residue was purified by chromatography (DCM-EtOAc = 10 : 1) to give the title compound as a yellow solid (5.50 g, 61%). NMR (400 MHz) 12.43 (s, 1H), 9.70 (s, 1H), 8.22 (d, J = 12.0 Hz, 1 H), 7.51 (d, J = 5 .2 Hz, 1 H), 5 .92 (s, 1 H), 1.89 (m, 1 H), 0.95 (m, 2H), 0.71 (m, 2H). Rt 3.19 min. MS: Calcd. : 287; Found: [M+H]+ 288.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Cyclopropyl-1H-pyrazol-3-amine, its application will become more common.