反应详情

To a solution of 1-isopropylpiperazine (50 mg, 0.39 mmol) and NEt3 (90 μL, 0.65 mmol) in DCM (8 mL) at 0° C. was added a suspension of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulene-9-sulfonyl chloride from Example 121 (0.13 mmol) in DCM (8 mL) and the resulting mixture warmed to RT after 10 min then stirred for 2 h. The reaction mixture was diluted with DCM, washed with a saturated aqueous NaHCO3 solution then dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si-PCC, gradient 2-7% 2M NH3/MeOH in DCM) affording 128 (41 mg, 65%) as a white solid. LCMS: RT 2.90 min [M+H]+ 486.3. 1H NMR (DMSO, 400 MHz): δ 8.79 (1H, d, J=2.41 Hz), 8.00 (1H, s), 7.94 (1H, d, J=0.61 Hz), 7.63 (1H, dd, J=8.62, 2.43 Hz), 7.28 (1H, d, J=8.62 Hz), 5.76-5.69 (1H, m), 4.64-4.62 (4H, m), 2.94-2.87 (4H, m), 2.62-2.61 (1H, m), 2.54-2.43 (4H, m), 1.49 (6H, d, J=6.62 Hz), 0.89 (6H, d, J=6.53 Hz)

1. washwashed with a saturated aqueous NaHCO3 solution
2. dry with materialthen dried (Na2SO4)
3. concentrationconcentrated in vacuo
4. customThe resulting residue was purified by column chromatography (Si-PCC, gradient 2-7% 2M NH3/MeOH in DCM)