Sodium Carbonate → HCID 68778513, compound

Participants

Reaction Conditions

Reaction Steps

Tetrakis(triphenylphosphine)palladium(0) (38 mg, 33 μmol), 5-bromo-1-(2,6-difluorophenyl)-7-methyl-1H-pyrazolo[3,4-b]pyridin-6(7H)-one (373 mg, 1096 μmol), methyl 4-(acetoxymethyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (403 mg, 1206 μmol) were treated with 1,4-dioxane (5.4 mL) and 1 M aqueous Na2CO3 (2.74 mL, 2741 μmol) under argon and heated in a microwave at 130° C. for 30 min. The reaction mixture was treated with EtOAc (20 mL) and extracted with 1N NaOH (2×15 mL). The pH was adjusted to ca. pH 6 with 5N HCl and extracted with DCM (3×20 mL), dried over MgSO4, filtered and concentrated affording the title compound (186 mg) as a yellow tar. The crude residue was used in the next step without further purification. MS (ESI, pos.ion) m/z: 412.1 (M+1).

Provenance & Evidence