Triethylamine → HCID 57877719, Verbindung

To a solution of (2S)-2-(4-fluorophenyl)morpholine hydrochloride (0.8 g, 3.68 mmol) and triethylamine (2.1 g, 20.8 mmol) in tetrahydrofuran (20 ml) was added 2-chloro-6-(2,3-dichloropyridin-4-yl)-3-methyl-3H-pyrimidin-4-one (2.0 g, 6.88 mmol) portionwise and the mixture was stirred for 12 hours. The resulting suspension was partitioned between chloroform and 1N sodium hydroxide and the aqueous layer was extracted with chloroform. The combined organic layer was washed with brine, dried over magnesium sulfate, and concentrated in vacuo. The residue was purified by silica gel chromatography eluting 5-10% methanol in chloroform to furnish 6-(2,3-dichloropyridin-4-yl)-2-((2S)-2-(4-fluorophenyl)morpholin-4-yl)-3-methyl-3H-pyrimidin-4-one (1.1 g, 2.53 mmol, 69%) as white crystals.