Water → HCID 59224651, compound

Participants

Reaction Conditions

Reaction Steps

2-Amino-4,6-dichloropyrimidine (246 mg, 1.5 mmol), bis(triphenylphosphine) palladium dichloride (53 mg, 0.07 mmol), sodium bicarbonate (252 mg, 3.0 mmol), 1,4-dioxane (2.5 ml), and water (1.5 ml) were placed in a reaction vessel. The resulting mixture was stirred at 80° C. for 10 minutes. To this mixture, 2-Ethoxy-4-methyl-5-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)benzoic acid methyl ester (320 mg, 1.0 mmol) obtained in Step 4 above was added dropwise after dissolving in 1,4-dioxane (2.5 ml). The resulting mixture was stirred at 80° C. for 20 hours. The reaction solution was diluted with ethyl acetate (100 ml), and washed three times with water (40 ml), and then with a saturated aqueous sodium chloride solution (40 ml). The washed ethyl acetate solution was dried over anhydrous sodium sulfate (10 g). After filtration, the filtrate was concentrated under reduced pressure. The resulting crude product was purified by silica gel column chromatography (developing solvent: n-hexane:ethyl acetate=2:1) to yield 5-(2-amino-6-chloropyrimidin-4-yl)-2-ethoxy-4-methylbenzoic acid methyl ester (Compound 1-3) (210 mg) as a yellow solid material.

Provenance & Evidence