Application of 31108-57-3, These common heterocyclic compound, 31108-57-3, name is 1H-Pyrazole-4-carbonitrile, 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.
To a solution of crude SB (124.8 mg, 0.314 mmol, theoretical amount) in anhydrous THF (3 mL) was added 4-cyanopyrazole (58.5 mg, 0.628 mmol) followed by potassium carbonate (86.8 mg, 0.628 mmol). The solution was heated at 50 C for 2 hours. Then the solution was diluted with ethyl acetate (200 mL). The resulting solution was washed with brine (2×100 mL), dried over magnesium sulfate and concentrated in vacuo. The crude product was purified by reverse phase prep-HPLC to afford desired product (34.6 mg, 0.0845 mmol, two steps overall yield=27%) as a white solid. 1HNMR (400 MHz, CDC13) 5(ppm): 7.86 (IH, s), 7.82 (IH, s), 5.01 (IH, AB), 4.91 (IH, AB), 2.61 (IH, t), 2.16-2.26 (2H, m), 2.04 (IH, m), 1.00-1.90 (21H, m), 0.68 (3H, s). LCMS: rt = 2.26 mm, m/z = 410.2 [M+H]+
The synthetic route of 31108-57-3 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; SAGE THERAPEUTICS, INC.; BOTELLA, Gabriel Martinez; HARRISON, Boyd L.; ROBICHAUD, Albert Jean; SALITURO, Francesco G.; BERESIS, Richard Thomas; WO2014/169833; (2014); A1;,
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