反应详情

温度

100 °C

A solution of 5-iodo-1-methyl-1H-imidazole (0.0217 g, 0.104 mmol), 3-[(S)-1-(2-chloro-3-fluoro-6-methoxy-phenyl)-ethyl]-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (0.030 g, 0.070 mmol), potassium carbonate (0.0289 g, 0.209 mmol) and 1,1′-bis(diphenylphosphino)ferrocenepalladium(II) dichloride, dichloromethane (2.84 mg, 0.00348 mmol) in previously degassed 4:1 dioxane:water (1.50 mL) was evacuated and charged with N2 (2×) and heated under microwave conditions [Biotage, 100° C., 30 min, high absorption]. The reaction mixture was partitioned between EtOAc and H2O and separated. The aqueous was back extracted with EtOAc (3×) and the combined organic fractions were dried over Na2SO4, filtered and concentrated in vacuo resulting in a crude brown oil. The crude was purified by chromatography on silica gel [ISCO Combiflash, 12 g cartridge, eluting with 100% DCM→8% MeOH in DCM]. This resulted in the title compound as an off-white solid. 1H NMR (400 MHz, CD3OD): δ=1.82 (d, J=7.3 Hz, 3H), 3.51 (s, 3H), 3.66 (br. s., 3H), 5.12 (q, J=7.1 Hz, 1H), 6.90 (dd, J=4.2, 9.0 Hz, 1H), 6.95 (s, 1H), 7.08 (dd, J=8.8, 8.8 Hz, 1H), 7.41 (d, J=1.0 Hz, 1H), 7.51 (s, 1H), 7.69 (s, 1H), 8.17 (d, J=2.0 Hz, 1H). MS (ES+): m/z 385.11, 387.07 (76/24) [MH+]. HPLC: tR=2.87 min (polar—5 min, ZQ3).

1. customwater (1.50 mL) was evacuated
2. additioncharged with N2 (2×)
3. customThe reaction mixture was partitioned between EtOAc and H2O
4. customseparated
5. extractionThe aqueous was back extracted with EtOAc (3×)
6. dry with materialthe combined organic fractions were dried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customresulting in a crude brown oil
10. customThe crude was purified by chromatography on silica gel [ISCO Combiflash, 12 g cartridge, eluting with 100% DCM→8% MeOH in DCM]