Cesium carbonate → 5-Bromo-3-[5-(1-hydroxy-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-1H-pyridin-2-one

Participants

Reaction Conditions

Reaction Steps

In a flame-dried seal tube reaction vial, dissolve 2-(6-Amino-pyridin-3-yl)-propan-2-ol (530 mg, 3.484 mmol) in anhydrous Dioxane (13 mL). Then add 3,5-Dibromo-1-methyl-1H-pyridin-2-one (1.022 g, 3.83 mmol), Cs2CO3 (3.4 g, 10.45 mmol) and Xantphos (0.2 g, 0.3482 mmol). Bubble argon through for 15 min before adding Pd(OAc)2 (39 mg, 0.1742 mmol). The tube as sealed and heated to 120° C. Reaction was kept at that temperature for 6 hrs. Reaction was then diluted with EtOAc (10 mL) and filtered through celite. Filter cake was washed with EtOAc (3×10 mL). The combined filtrate was concentrated and purified on ISCO column with 5-10% MeOH in 1/1 EtOAC/Hexane to afford 5-Bromo-3-[5-(1-hydroxy-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-1H-pyridin-2-one (710 mg, yield 60%) as green solid.

Provenance & Evidence