反应详情

Butyllithium (2.5 M in hexanes, 0.29 ml, 0.74 mmol) was added to a stirred solution of 4-chloro-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one from Step B (50 mg, 0.295 mmol) at −78° C. in THF (30 mL). After complete addition of butyllithium, N,N,N′,N′-tetramethylethane-1,2-diamine (0.31 mL, 0.77 mmol) was added. After 1 h at −78° C., 1,2-bis(bromomethyl)-4-nitrobenzene (91 mg, 0.295 mmol, described in Intermediate 2) was added and the reaction warmed to ambient temperature. After 8 h, the reaction was quenched with H2O and the mixture was partitioned between EtOAc and H2O. The aqueous solution was extracted with EtOAc (3×20 mL). The combined organic extracts were washed with brine (100 mL), dried over Na2 SO4, filtered, and concentrated in vacuo to give the title compound. MS: m/z=317 (M+1).

1. additionwas added
2. waitAfter 8 h
3. customthe reaction was quenched with H2O
4. customthe mixture was partitioned between EtOAc and H2O
5. extractionThe aqueous solution was extracted with EtOAc (3×20 mL)
6. washThe combined organic extracts were washed with brine (100 mL)
7. customdried over Na2 SO4
8. filtrationfiltered
9. concentrationconcentrated in vacuo