A common heterocyclic compound, 3463-30-7, name is 1-(4-Nitrophenyl)-1H-pyrazole, molecular formula is C9H7N3O2, 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. 3463-30-7.
Compound 11-b (1.0 g, 5.29 mmol) and ammonium chloride (0.7 g, 13.23 mmol) were dissolved in 50percent ethanol-water (20 mL). Zn-powder (0.9 g, 13.23 mmol) was then added. The mixture was refluxed for 30 minutes. After cooled to room temperature, the mixture was filtrated, and the filter cake was washed with ethanol (10 mL). The combined filtrate were concentrated under reduced pressure, and the residue was diluted with water (50 mL) and extracted with ethyl acetate (50 mL¡Á3). The organic layer was dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure to give yellow solid 11-a (670 mg, yield: 80percent), which was used directly for the next step without purification. LC-MS (ESI): m/z=160 [M+H]+.
The synthetic route of 1-(4-Nitrophenyl)-1H-pyrazole has been constantly updated, and we look forward to future research findings.