Cesium carbonate → HCID 53628372, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of azetidine-1-sulfonamide (prepared according to patent WO 2004/011443, 0.131 g), tris(dibenzylideneacetone)-dipalladium (0) (22 mg), 2-dicyclohexylphosphino-2′,4′,6′-tri-isopropyl-1,1′-biphenyl (XPHOS) (11 mg), cesium carbonate (0.117 g) and 4-chloro-2-[(2,3-difluorobenzyl)thio]-6-{(1S)-1-[(2R)-1,4-dioxaspiro[4.5]dec-2-yl]ethoxy}pyrimidine (the product of step i) (0.100 g) in anhydrous dioxane (5 ml) was heated at reflux in a microwave at 100° C., 300 W, open vessel with cooling for 15 min. Saturated aqueous ammonium chloride was added and the resulting mixture extracted with EtOAc. The combined organic extracts were washed with saturated aqueous sodium chloride, dried with sodium sulfate, filtered and evaporated. The residue was purified by column chromatography on silica using a 1:19 to 3:7 mixture of EtOAc and iso-hexane as eluent and then by reverse phase HPLC (gradient 25-95% acetonitrile in 0.1% ammonium acetate) to give the subtitle compound as a colourless gum. Yield: 43 mg

Provenance & Evidence