Cesium carbonate → [2-Methoxy-6-(6-methoxy-pyridin-3-yl)-pyrimidin-4-yl]-[2-(4-methoxy-phenyl)-ethyl]-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of (6-chloro-2-methoxy-pyrimidin-4-yl)-[2-(4-methoxy-phenyl)-ethyl]-amine (600 mg, 2.04 mmol), 2-methoxy-5-pyridyl-boronic acid (469 mg, 3.06 mmol, prepared according to the procedure described in J. Org. Chem., 2002, 67, 7541), and Cs2CO3 (1.66 g, 5.11 mmol) in ethylene glycol dimethyl ether (8 mL) and water (2 mL), at room temperature, is degassed with argon gas for 5 minutes and treated with tetrakis(triphenylphosphine)palladium (0) (118 mg, 0.1 mmol). The mixture is heated at 85° C. for 5 hours, diluted with water (50 mL), and extracted twice with EtOAc (50 mL). The combined extracts are dried over magnesium sulfate, filtered and evaporated. The residue is subjected to chromatography on silica gel eluting with a mixture of EtOAc and heptane (1:1, v/v) affording [2-methoxy-6-(6-methoxy-pyridin-3-yl)-pyrimidin-4-yl]-[2-(4-methoxy-phenyl)-ethyl]-amine [0.75 g, 100%, Example 35(o)] as an oil. LCMS: RT=2.74 minutes, MS: 367 (M+H). 1H NMR (300 MHz, CDCl3): □08.78 (1H, d, J=2.1 Hz), 8.21 (1H, dd, J=8.7, 2.4 Hz), 7.16 (2H, d, J=8.4 Hz), 6.88 (1H, dd, J=8.7, 2.4 Hz), 6.82 (2H, d, J=8.4 Hz), 6.3 (1H, s), 4.95 (1H, brs), 4.03 (3H, s), 4.02 (3H, s), 3.82 (3H, s), 3.72-3.63 (2H, m), 2.92 (2H, t, J=6.9 Hz). IC50=1.7 nM

Provenance & Evidence