反应详情

Sodium ethoxide (40 mg, 0.59 mmol) was added to DMF at 0° C., and the suspension was stirred for 10 min. (4-(benzofuran-2-ylmethoxy)phenyl)methanol (150 mg, 0.59 mmol), was added and resulting mixture was stirred at this temperature for 0.5 h, then allowed to reach room temperature. To this mixture 76 (130 mg, 0.65 mmol) was added portionwise. Resulting mixture was stirred at room temperature for 2 h. DMF was evaporated off in-vacuo. The crude residue was purified by flash chromatography, eluting with hexane: EtOAc (2:1) to give the target compound (20 mg, 8%) as a white solid. m/z=456.10 (M+H). H1 NMR (500 MHz, DMSO-d6): δ=10.22 (1H, bs, NH), 7.69-7.64 (2H, m, ArH), 7.58 (1H, d, J=8.15 Hz, ArH), 7.55 (1H, s, ArH), 7.42 (2H, d, J=8.00 Hz, ArH), 7.33 (1H, t, J=7.70 Hz, ArH), 7.26 (1H, t, J=7.5 Hz, ArH), 7.11 (2H, d, J=8.28 Hz, ArH), 7.06 (1H, s, ArH), 6.23 (1H, s, ArH), 5.29 (2H, s, CH2), 5.12 (2H, s, CH2), 2.37 (3H, s, CH3).

1. additionwas added
2. customresulting mixture
3. customto reach room temperature
4. customResulting mixture
5. stirringwas stirred at room temperature for 2 h
6. customDMF was evaporated off in-vacuo
7. customThe crude residue was purified by flash chromatography
8. washeluting with hexane: EtOAc (2:1)