1-Butanol → HCID 58094763, compound

Participants

Reaction Steps

4-(2,4-dichlorophenyl)-2-(2-fluoropyridin-4-yl)-5-(1H-pyrazol-5-yl)thiophene-3-carbonitrile (0.372 g, 0.903 mmol), 2,4-dimethoxybenzylamine (821 mg, 4.91 mmol) and DIPEA (317 mg, 2.46 mmol) in 1-Butanol (3.74 mL, 40.9 mmol) was irradiated in microwave at 160° C. for 2 hr under nitrogen. The solvent was evaporated and the residue was purified by column chromatography to afford an intermediate which was in the next step. LC/MS (FA) ES+ 562, 564. The above intermediate was dissolved in DCM (26 mL, 4.0E2 mmol) and TFA (8.5 mL, 110 mmol). The mixture was stirred at rt for 30 min. The mixture was concentrated and the residue was basified by ammonium hydroxide. The solvent was evaporated and the mixture was purified by column chromatography to afford the title compound (0.375 g, 100%). LC/MS (FA) ES+ 412, 414. 1H NMR (400 MHz, d4-methanol) δ: 8.00 (1H, d, J=6.62 Hz), 7.77 (1H, d, J=2.01 Hz), 7.59 (1H, d, J=2.45 Hz), 7.56 (1H, dd, J=8.26, 2.02 Hz), 7.49 (1H, d, J=8.27 Hz), 7.38 (1H, d, J=1.59 Hz), 7.24 (1H, dd, J=6.64, 1.77 Hz), 5.58 (1H, d, J=2.38 Hz)

Provenance & Evidence