Potassium Phosphate, Tribasic → HCID 53373964, compound

Participants

Reaction Conditions

Reaction Steps

A glass microwave reaction vessel was charged with (S)-3-chloro-7-(2,4-difluoropyridin-3-yl)-5′H-spiro[chromeno[2,3-c]pyridine-5,4′-oxazol]-2′-amine (0.190 g, 0.474 mmol), potassium phosphate (0.302 g, 1.422 mmol), 2-(3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.169 g, 0.806 mmol) and bis(di-tert-butylphenylphosphine)dichloropalladium (II) (0.029 g, 0.047 mmol) in dioxane (4 mL) and water (1.2 mL). The reaction mixture was heated in microwave at 110° C. for 30 min. The mixture was diluted with EtOAc and saturated Na2CO3. The organic layer was washed twice with saturated Na2CO3, dried over Na2SO4 and concentrated in vacuo. The crude residue was purified by silica gel chromatography (2-10% MeOH—CH2Cl2) to provide a residue that was purified by HPLC to provide the titled compound as a white solid. MS m/z=449.2 [M+H]+. Calculated for C24H18F2N4O3: 448.13.

Provenance & Evidence