反应详情

温度

20 °C

A mixture of N-tert-butyl-5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-sulfonamide (300 mg, 0.717 mmol, 1.0 eq), BCl3/CH2Cl2 (7.17 ml, 7.17 mmol, 10 eq. 1 M) in CH2Cl2 (20 ml) was stirred at 20° C. under a nitrogen atmosphere for 6 h. Water (50 ml) was added into the mixture. The mixture was extracted by EA (3×50 ml). The combined organic phases were washed (sat NaHCO3), brine, dried (Na2SO4), filtered and concentrated. The residue was purified by recrystallization (solvent: EA/PE and DIPE) to afford title compound 5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-sulfonamide (Compound 50) (50.9 mg, 19.6%) as a yellow solid. LC-MS (m/z)=363.0 [M+H]+; 1H NMR (400 MHz, DMSO-d6): 0.72-0.74 (m, 2H), 0.94-0.99 (m, 2H), 1.89-1.94 (m, 1H), 6.41 (s, 1H), 6.84 (s, 1H), 7.58 (d, J=4 Hz, 1H), 7.49-7.81 (m, 3H), 8.29 (d, J=5.2 Hz, 1H), 10.08 (s, 1H), 12.14 (s, 1H).

1. extractionThe mixture was extracted by EA (3×50 ml)
2. washThe combined organic phases were washed (sat NaHCO3), brine
3. dry with materialdried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by recrystallization (solvent: EA/PE and DIPE)