Triethylamine → 3-methyl-2-((3R)-3-methylmorpholin-4-yl)-6-(pyrimidin-4-yl)-3H-pyrimidin-4-one

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Reaction Steps

A solution of 2-chloro-3-methyl-6-(pyrimidin-4-yl)-3H-pyrimidin-4-one (0.32 g, 1.44 mmol), (3R)-3-methylmorpholine hydrochloride (0.4 g, 2.9 mmol) and triethylamine (0.9 g, 8.9 mmol) in tetrahydrofuran (20 ml) was stirred for 10 hours at 100° C. The solution was partitioned between water and chloroform, and the organic layer was washed with brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent; 5-10% methanol in chloroform) to afford 3-methyl-2-((3R)-3-methylmorpholin-4-yl)-6-(pyrimidin-4-yl)-3H-pyrimidin-4-one (0.31 g, 1.08 mmol, 75%) as white crystals.

Provenance & Evidence