反应详情

温度

-78 °C

To a solution of 1-bromo-3-cyclopropyl-benzene (0.018 ml, 0.124 mmol) in THF (0.2 ml) cooled to −78° C. was added a solution of 1.6 M t-BuLi (0.155 ml, 0.249 mmol). The crude was stirred at −78° C. for 2 hrs. To this solution was add a solution of 3-fluoro-4-((R)-7-oxo-6,7-dihydro-5H pyrrolo[1,2-c]imidazol-5-yl)-benzonitrile (20 mg, 0.083 mmol) in THF (0.2 ml). The crude was stirred at −78° C. for 1 hr, then at 0° C. for 1 hr and room temperature for 1 hr. This reaction was quenched with water and extract the aq. with CH2Cl2. The organic layer was dried over Na2SO4, filtered, and concentrated. The crude was purified via preparation plate using 10% (2M NH3 in MeOH)/CH2Cl2. The entitled product (4 mg) was isolated as the major diastereomer. MS 360.1 (M+H); LCMS condition B, retention time 1.16 min. 1H NMR (400 MHz, CDCl3) δ ppm 0.52-0.65 (m, 2H), 0.85-0.95 (m, 2H), 1.74-1.91 (m, 1H), 2.57 (br. s., 1H), 2.92 (d, 1H), 3.30 (dd, 1H), 5.73 (d, 1H), 6.91 (s, 1H), 6.96 (ddd, 1H), 7.12 (t, 1H), 7.16-7.28 (m, 3H), 7.29-7.41 (m, 2H), 7.42-7.53 (m, 1H).

1. stirringThe crude was stirred at −78° C. for 1 hr
2. waitat 0° C. for 1 hr
3. waitroom temperature for 1 hr
4. customThis reaction was quenched with water
5. extractionextract the aq. with CH2Cl2
6. dry with materialThe organic layer was dried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated
9. customThe crude was purified via preparation plate