Ethyl Acetate → Diethyl 2-(4-(2-((3-fluorophenyl)amino)-4-(propylamino)pyrimidin-5-yl)-2-methyl-3-butyn-2-yl)malonate

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Reaction Steps

To a solution of diethyl 2-(2-methyl-3-butyn-2-yl)malonate synthesized according to the method described in Chemistry A European Journal, 2005, 11, pp. 308-320 (3.3 g), N2-(3-fluorophenyl)-5-iodo-N4-propylpyrimidine-2,4-diamine (F2, 868 mg), bis(triphenylphosphine)palladium(II) dichloride (161 mg) and copper(I) iodide (88 mg) in N,N-dimethylformamide (15 mL), triethylamine (1.6 mL) was added at room temperature, and the mixture was stirred at the same temperature for 2 hours and 30 minutes. To the reaction mixture, tetrakis(triphenylphosphine)palladium(0) (132 mg) was added at room temperature, and the mixture was stirred at the same temperature for 1 hour and 40 minutes. To the reaction mixture, ethyl acetate and saturated aqueous ammonium chloride were added. The organic layer was separated, washed successively with saturated aqueous ammonium chloride, water and saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent, 94 to 64% hexane in ethyl acetate) to obtain diethyl 2-(4-(2-((3-fluorophenyl)amino)-4-(propylamino)pyrimidin-5-yl)-2-methyl-3-butyn-2-yl)malonate (F13, 803 mg) as yellow solid.

Provenance & Evidence