Methylamine → Benzenesulfonamide, 4-(2-amino-5-pyrimidinyl)-2-fluoro-N-methyl-

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Reaction Steps

4-Bromo-2-fluorobenzenesulfonyl chloride (100 mg, 0.36 mmol) was added to a mixture of methylamine (2M in THF, 0.275 mL, 0.55 mmol) and triethylamine (0.10 mL, 0.73 mmol) in methylene chloride (2.0 mL). The reaction mixture was quenched with saturated NaHCO3 (1.0 mL) and concentrated to afford the crude intermediate in water. A mixture of the intermediate in water, 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-amine (81 mg, 0.36 mmol), tetrakis(triphenylphosphine)palladium (20 mg, 0.02 mmol), potassium carbonate (150 mg, 1.1 mmol) in toluene (2.0 mL) and ethanol (1.0 mL) was heated at 110° C. for 2 h. After cooling to RT, ether was added to the mixture and the solid was filtered, washed with water and ether to afford the desired product (0.086 g, 83%). LCMS: (M+H)=282.9.

Provenance & Evidence