Potassium Carbonate → tert-Butyl [2-({3-[(2,5-dichloropyrimidin-4-yl)amino]phenyl}ethynyl)pyridin-4-yl]carbamate

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Reaction Steps

To a solution of tert-butyl {2-[(3-aminophenyl)ethynyl]pyridin-4-yl}carbamate (0.50 g, 1.6 mmol) and 2,4,5-trichloropyrimidine (0.19 mL, 1.7 mmol) in N,N-dimethylformamide (5.0 mL) was added potassium carbonate (0.670 g, 4.85 mmol). The resultant mixture was stirred for 40 hours at room temperature. The reaction was quenched with water. EtOAc was added and the layers were separated. The aqueous layer was extracted with EtOAc twice. The combined organic layers were washed with water and brine then dried (Na2SO4), filtered and concentrated to give the desired product as a light brown gum (0.665 g, 90%). LCMS for C22H20Cl2N5O2 (M+H)+: m/z=456.0, 458.0.

Provenance & Evidence