Cesium carbonate → 5-(6-chloropyridin-3-yl)-1-ethylpyridin-2(1H)-one

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-bromo-1-ethylpyridin-2(1 H)-one (1.9 g, 9.45 mmol), 6-chloropyridin-3-ylboronic acid (1.8 g, 11.46 mmol), Cs2CO3 (9.9 g, 30.37 mmol) and tetrakis(triphenylphosphine)palladium (0) (543 mg, 0.55 mmol) were suspended in dioxane:water (15:1, 20 ml). After degassing, the mixture was heated in a microwave at 140° C. for 30 min. The reaction was then diluted with EtOAc and washed with water. The organic layer was dried over Na2SO4, filtered, and concentrated to dryness via rotary evaporation. The resulting residue was purified by LCMS to provide the title compound, 5-(6-chloropyridin-3-yl)-1-ethylpyridin-2(1 H)-one (1.2 g, 51% yield).

Provenance & Evidence