1,4-Dioxane → 2-(4-amino-3-{1-[(3-methylphenyl)acetyl]-2,3-dihydro-1H-indol-5-yl}-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethanol

Participants

Reaction Conditions

Reaction Steps

To a 25 mL pressure tube was charged 2-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethanol (63.8 mg, 0.209 mmol), 1-[(3-methylphenyl)acetyl]-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-indole (79 mg, 0.209 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (8.54 mg, 0.011 mmol), and sodium bicarbonate (35.1 mg, 0.418 mmol) followed by dioxane (8 mL), and water (2 mL). The reaction was heated at 120° C. for 40 min in microwave. The reaction was cooled to room temperature, the mixture was transferred into a 100 mL flask, rinsed by EtOAc, with the water layer and black greasy solid stayed in tube (total 100 mL of EtOAc was added to the mixture). The EtOAc solution was concentrated to dryness, and re-dissolved with CH2Cl2/MeOH (8 mL/2 mL). It was purified by flash column 25-100% EtOAc/hexane, then 0-10% MeOH/EtOAc, Si SF15-24g, to afford a brown solid. The brown solid was further purified by recrystallization in CH3CN to give a brown solid as the title compound. LC/MS (ES) m/z=429.4 [M+H]+. 1H NMR (400 MHz, DMSO-d6) δ ppm 2.31 (s, 3H), 3.24 (s, 2H), 3.80-3.88 (m, 4H), 4.19-4.27 (m, 2H), 4.37 (t, J=5.81 Hz, 2H), 4.89 (t, J=5.68 Hz, 1H), 7.07-7.14 (m, 3H), 7.20-7.28 (m, 1H), 7.45 (d, J=8.08 Hz, 1H), 7.51 (s, 1H), 8.21 (d, J=8.34 Hz, 1H), 8.23 (s, 1H).

Provenance & Evidence