反应详情

温度

80 °C

A mixture of 5-amino-3-(4-phenoxyphenyl)-1H-pyrazole-4-carbonitrile (1.0 g, 3.6 mmol), ethyl 2-(1-benzylpiperidin-4-ylidene)acetate (1.1 g, 4.3 mmol) and K2CO3 (745 mg, 5.4 mmol) in DMF (20 mL) was heated to 80° C. for 16 hr under N2. The reaction was quenched with water (20 mL) and extracted with EA (20 mL×3). The combined organic layers were dried over Na2SO4, concentrated and purified by chromatography column on silica gel using 30% of EA in PE as eluant to give the product (950 mg, 54.9%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ 11.92 (s, 1H), 7.84 (d, J=8.8 Hz, 2H), 7.48-7.40 (m, 2H), 7.36-7.29 (m, 4H), 7.27-7.23 (m, 1H), 7.20 (t, J=7.6 Hz, 1H), 7.15-7.07 (m, 4H), 3.55 (s, 2H), 3.01 (s, 2H), 2.81-2.73 (m, 2H), 2.39-2.27 (m, 2H), 2.26-2.16 (m, 2H), 1.83-1.74 (m, 2H). MS (ESI, m/e) [M+1]+ 489.9.

1. customThe reaction was quenched with water (20 mL)
2. extractionextracted with EA (20 mL×3)
3. dry with materialThe combined organic layers were dried over Na2SO4
4. concentrationconcentrated
5. custompurified by chromatography column on silica gel using 30% of EA in PE as eluant