反应详情

温度

180 °C

3-Fluorobenzonitrile (0.385 g, 3.18 mmol) and (3R)-pyrrolidin-3-ol (0.278 g, 3.19 mmol) were dissolved in DMPU (3 mL). The resulting mixture was subjected to microwave heating at 180° C. for 5 h. Water was added and the mixture extracted with ether. The organic layer washed with water, dried with MgSO4, filtered and concentrated. Purification on a 10 g Isolute Flash Si column (heptane/EtOAc 2:1→1:1) gave 0.375 g (63%) of the title compound. 1H NMR (400 MHz, MeOH-d4) δ 7.22 (dd, 1H, J=8.5, 7.5 Hz), 6.82 (d, 1H, J=7.5 Hz), 6.72 (dd, 1H, J=8.5, 2.2 Hz), 6.69 (bs, 1H), 4.48 (m, 1H), 3.42-3.33 (m, 2H), 3.24 (ddd, 1H, J=8.8, 8.8, 3.4 Hz), 3.13 (bd, 1H, J=10.5 Hz), 2.14-1.94 (m, 2H). 13C NMR (MeOH-d4) δ 149.2, 130.9, 120.6, 119.5, 117.0, 114.9, 113.4, 71.4, 56.7, 46.5, 34.7.

1. extractionthe mixture extracted with ether
2. washThe organic layer washed with water
3. dry with materialdried with MgSO4
4. filtrationfiltered
5. concentrationconcentrated
6. customPurification on a 10 g Isolute Flash Si column (heptane/EtOAc 2:1→1:1)