反应详情

The [3-[4-(7-benzenesulfonyl-5-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-piperazin-1-yl]-2-(4-chlorophenyl)-3-oxo-propyl]-carbamic acid tert-butyl ester (295 mg, 0.464 mmol) was dissolved in 2.3 mL of 1,4-dioxane and treated with 4M HCl in 1,4-dioxane (2.3 mL, 9.29 mmol). The mixture was allowed to stir for 4 hours to completion affording a yellow precipitate. The suspension was diluted with diethyl ether and poured into water. More diethyl ether was added, and the layers were shaken. The ether wash was discarded, and the aqueous was treated with saturated NaHCO3 solution until basic to pH paper (about 10) to afford a white precipitate. The aqueous was extracted with ethyl acetate, and the organics were combined. The organic was washed with water, then brine, separated, dried over MgSO4, filtered, and concentrated in vacuo to afford the near-pure 3-amino-1-[4-(7-benzenesulfonyl-5-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-piperazin-1-yl]-2-(4-chlorophenyl)-propan-1-one as a colorless oil (194 mg, 77%). 1H NMR (free-base, CDCl3, 400 MHz) δ 8.44 (s, 1H), 8.16 (d, J=8.4 Hz, 2H), 7.59 (t, J=7.2 Hz, 1H), 7.49 (appt, J=7.6 Hz, 2H), 7.31 (m, 3H), 7.19 (d, J=8.0 Hz, 2H), 3.92 (m, 1H), 3.85 (dd, J=8.4, 5.2 Hz, 1H), 3.61 (m, 1H), 3.56-3.50 (m, 4H), 3.43 (m, 2H), 3.32 (m, 2H), 2.90 (m, 2H), 2.29 (s, 3H). LCMS (APCI+) m/z 539 [M+H]+; Rt=2.40 min.

1. customaffording a yellow precipitate
2. stirringthe layers were shaken
3. washThe ether wash
4. additionthe aqueous was treated with saturated NaHCO3 solution until basic
5. customto afford a white precipitate
6. extractionThe aqueous was extracted with ethyl acetate
7. washThe organic was washed with water
8. custombrine, separated
9. dry with materialdried over MgSO4
10. filtrationfiltered
11. concentrationconcentrated in vacuo