Diisopropylethylamine → 6-(2,6-difluoro-3,5-dimethoxyphenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-d]pyrimidine

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Reaction Conditions

Reaction Steps

A mixture of 6-chloro-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-d]pyrimidine (477 mg, 2.00 mmol), 2-(2,6-difluoro-3,5-dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (600. mg, 2.00 mmol), bis(tri-t-butylphosphine)palladium (150.0 mg, 0.300 mmol) and diisopropylethylamine (0.700 mL, 4.02 mmol) in 1,4-dioxane (20 mL) was degassed and recharged with nitrogen for three times. The mixture was stirred at 125° C. overnight. The solvent was removed under reduced pressure. The residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexanes (gradient: 0-50%) to afford the desired product (0.30 g, 40%). LCMS (M+H)+=377.2.

Provenance & Evidence