Sodium Carbonate → 5-[4-(2-Methylsulfanyl-pyrimidin-4-yl)-1-(tetrahydro-pyran-2-yl)-1H-pyrazol-3-yl]-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-[3-Iodo-1-(tetrahydro-pyran-2-yl)-1H-pyrazol-4-yl]-2-methylsulfanyl-pyrimidine B (1.33 g, 3.3 mmol) and 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (1 g, 4.1 mmol) in DMF (30 mL) was added a 2M solution of sodium carbonate (2 mL). The sodium carbonate appeared to come out of solution upon addition. The mixture was deoxygenated with a nitrogen bubbler for a few minutes. The palladium catalyst was added and nitrogen bubbling continued for a few minutes before the bubbler was removed. The mixture was heated at 85° C. for 18 hr. LCMS shows complete conversion to product. The mixture was dropped into saturated aqueous NaCl and the resulting solids collected by filtration and rinsed with water. The solids were dissolved in methanol/dichloromethane (1:9), dried over MgSO4 and reduced to minimum volume. The residue was purified on a short column of silica gel using a gradient of 0-50% ethyl acetate in dichloromethane as eluant to give 5-[4-(2-Methylsulfanyl-pyrimidin-4-yl)-1-(tetrahydro-pyran-2-yl)-1H-pyrazol-3-yl]-1H-pyrrolo[2,3-b]pyridine (C-1-1) (0.89 g, 69%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 11.73 (br. s., 1H), 8.69 (s, 1H), 8.43 (d, J=5.31 Hz, 1H), 8.29 (d, J=2.02 Hz, 1H), 8.07 (d, J=2.02 Hz, 1H), 7.51 (t, J=3.03 Hz, 1H), 7.11 (d, J=5.31 Hz, 1H), 6.48 (dd, J=3.28, 1.77 Hz, 1H), 5.53 (dd, J=9.85, 2.27 Hz, 1H), 4.00 (br. d, J=13.39 Hz, 1H), 3.61-3.76 (br. m, 1H), 2.10-2.24 (br. m, 4H), 1.91-2.06 (br. m, 2H), 1.65-1.80 (br. m, 1H), 1.50-1.63 (br. m, 2H).

Provenance & Evidence