Sodium Carbonate → 1-((2-(isoquinolin-5-yl)-4-morpholinothieno[3,2-d]pyrimidin-6-yl)methyl)-N,N-dimethylpiperidin-4-amine

Participants

Reaction Conditions

Reaction Steps

A sealable tube was charged with [1-(2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidin-6-ylmethyl)-piperidin-4-yl]-dimethyl-amine (0.630 g, 1.59 mmol), isoquinoline-5-boronic acid (0.331 g, 1.91 mmol), dichlorobis(triphenylphosphine) palladium(II) (0.056 g, 0.08 mmol), 1 N aqueous sodium carbonate solution (2.5 mL) and acetonitrile (7.5 mL). The vessel was evacuated and back-filled with argon three times then sealed and heated at 130° C. for 90 min. The reaction mixture was cooled, concentrated, redissolved in methanol and filtered through celite. The filtrates were concentrated then purified by chromatography (C-18 reverse phase column, 5 to 95% acetonitrile in water containing 0.1% TFA). The fractions containing the desired product were concentrated then dissolved in MeOH/dichloromethane, basified with solid sodium carbonate then filtered and concentrated to furnish 109 (0.386 g, 50%) as a white foam. MS m/e 489 [M+H]; 1H NMR (300 MHz, MeOH-d4) δ ppm 1.61-1.91 (m, 2 H) 1.99-2.15 (m, 2 H) 2.17-2.36 (m, 2 H) 2.88 (s, 6 H) 3.04-3.28 (m, 3 H) 3.73-3.87 (m, 4 H) 3.91 (s, 2 H) 3.96-4.07 (m, 4 H) 7.33 (s, 1 H) 7.69-7.83 (m, 1 H) 8.18 (d, J=8.3 Hz, 1 H) 8.30 (d, J=7.2 Hz, 1 H) 8.43 (d, J=6.4 Hz, 1 H) 8.57 (d, J=6.0 Hz, 1 H) 9.28 (s, 1 H)

Provenance & Evidence