Cesium carbonate → 5-((6-(1-methyl-1H-pyrazol-4-yl)pyrimidin-4-yl)oxy)pyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-((6-chloropyrimidin-4-yl)oxy)pyridin-2-amine (0.50 g, 2.25 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.47 g, 2.25 mmol), and Cs2CO3 (1.46 g, 4.49 mmol) in 5:1 dioxane/water (6 mL) was sparged with Ar, treated with Pd(PPh3)4 (0.26 g, 0.23 mmol), sparged again with Ar and heated at 90° C. overnight. The mixture was cooled to RT, the solids removed via filtration, washed with dioxane and the filtrate concentrated to dryness. The residue was treated with water, extracted with EtOAc, washed with brine, dried over Na2SO4, and concentrated to dryness. The material was treated with EtOAc and the resulting solid collected via filtration to afford 5-((6-(1-methyl-1H-pyrazol-4-yl)pyrimidin-4-yl)oxy)pyridin-2-amine (0.41 g, 68%). 1H NMR (400 MHz, DMSO-d6): δ 8.60 (d, 1 H), 8.44 (s, 1 H), 8.12 (s, 1 H), 7.78 (d, 1 H), 7.28 (m, 2 H), 6.48 (d, 1 H), 5.94 (s, 2 H), 3.88 (s, 3 H); MS (ESI) m/z: 269.1 (M+H+).

Provenance & Evidence