反应详情

Ethynylbenzene (34.26 mg, 36.92 μL, 0.3354 mmol) was added dropwise to a stirred solution of 7-iodo-2-(4-isopropylsulfonylphenyl)-5-(p-tolylsulfonyl)pyrrolo[2,3-b]pyrazine (150 mg, 0.2580 mmol), triethylamine (130.5 mg, 179.8 μL, 1.290 mmol), copper(I) iodide (5.896 mg, 0.03096 mmol) and Pd(PPh3)4 (14.91 mg, 0.01290 mmol) in DMF (1.3 mL) and the resulting solution stirred at ambient temperature for 64 hours. The solution was added dropwise to a mixture of EtOAc/ice water and the layers separated. The organic layer was washed with brine (×2), dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by column chromatography (ISCO Companion™, 12 g column, eluting with 2 to 20% EtOAc/DCM, loaded in DCM) to give the sub-title product as an off-white solid (96.4 mg, 67% Yield). 1H NMR (400.0 MHz, DMSO) δ 1.19 (d, 6H), 2.38 (s, 3H), 3.49 (s, 1H), 7.50 (t, 5H), 7.64 (t, 2H), 8.01 (d, 2H), 8.10 (d, 2H), 8.44 (d, 2H), 8.81 (s, 1H) and 9.24 (s, 1H) ppm; MS (ES+) 556.1.

1. customthe layers separated
2. washThe organic layer was washed with brine (×2)
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe residue was purified by column chromatography (ISCO Companion™, 12 g column, eluting with 2 to 20% EtOAc/DCM, loaded in DCM)