Triethylamine → 6-(3-fluoro-pyridin-4-yl)-3-methyl-2-((3S)-3-(4-morpholin-4-yl-phenyl)-piperazin-1-yl)-3H-pyrimidin-4-one

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Reaction Steps

To a solution of the above prepared (3R)-3-(4-(morpholin-4-yl)phenyl)piperazine trihydrochloride (0.5 g, 1.40 mmol) and triethylamine (0.8 g, 7.91 mmol) in tetrahydrofuran (10 ml) was added 2-chloro-6-(3-fluoropyridin-4-yl)-3-methyl-(3H)-pyrimidin-4-one (0.3 g, 1.25 mmol) which was prepared by Reference Example 2 portionwise. After stirring 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 column chromatography eluting 5-10% methanol in chloroform to furnish 6-(3-fluoro-pyridin-4-yl)-3-methyl-2-((3S)-3-(4-morpholin-4-yl-phenyl)-piperazin-l-yl)-3H-pyrimidin-4-one (0.41 g, 0.91 mmol, 73%) as white crystals.

Provenance & Evidence