反应详情

3-(bromomethyl)benzonitrile (0.086 g, 0.44 mmol) was added to a stirred suspension of 5-[(4-fluorophenyl)carbonyl]-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ol (0.105 g, 0.4 mmol) and Cs2CO3 (0.261 g, 0.8 mmol) in ACN (2 mL). The mixture was stirred at room temperature for 16 hours, then diluted with water and extracted with DCM. The organic layer was separated, dried (MgSO4), filtered and the solvents evaporated in vacuo. The crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 50/50). The desired fractions were collected, the solvents evaporated in vacuo and the residue triturated with DIPE to yield 3-[({5-[(4-fluorophenyl)carbonyl]-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-yl}oxy)methyl]benzonitrile (0.089 g, 59% yield) as a white solid. C21H17FN4O2. 1H NMR (500 MHz, CDCl3) δ ppm 4.08 (br. s., 4 H), 4.74 (br. s., 2 H), 5.22 (s, 2 H), 5.51 (br. s., 1 H), 7.15 (t, J=8.5 Hz, 2 H), 7.44-7.51 (m, 3 H), 7.60 (d, J=7.8 Hz, 1 H), 7.65 (d, J=7.8 Hz, 1 H), 7.74 (s, 1 H).

1. extractionextracted with DCM
2. customThe organic layer was separated
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customthe solvents evaporated in vacuo
6. customThe crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 50/50)
7. customThe desired fractions were collected
8. customthe solvents evaporated in vacuo
9. customthe residue triturated with DIPE