2,6-Lutidine → HCID 59224637, compound

Participants

Reaction Conditions

Reaction Steps

3-(2-amino-6-chloropyrimidin-4-yl)-4-methylphenol (2.12 g, 9.00 mmol) obtained in Step 4 above was placed in a reaction vessel, and then dichloromethane (60 ml) was added thereto. The mixture was cooled to 0° C. 2,6-Lutidine (1.25 ml, 10.7 mmol) and tert-butyldimethylsilyl trifluoromethanesulfonate (2.27 ml, 9.88 mmol) were sequentially added to the solution. The mixture was stirred at 0° C. for 1 hour and then at room temperature for 30 minutes. The resulting reaction solution was diluted with dichloromethane (150 ml), and sequentially washed with a saturated aqueous sodium bicarbonate solution (150 ml), water (150 ml), and a saturated aqueous sodium chloride solution (150 ml). The dichloromethane solution was dried over anhydrous sodium sulfate. 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=9:1 to 6:1) to yield 4-[5-(tert-butyldimethylsilanyloxy)-2-methylphenyl]-6-chloropyrimidin-2-ylamine (Compound 1-5) (2.41 g, 77%).

Provenance & Evidence