Benzoyl chloride → (2S)-2-Methyl-7-(morpholin-4-yl)-1-(phenylcarbonyl)-2-(trifluoromethyl)-2,3-dihydroimidazo[1,2-a]pyrimidin-5(1H)-one

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Reaction Steps

14.2 mg of sodium hydride are added to a solution of 150 mg of (2S)-2-methyl-7-morpholin-4-yl-2-trifluoromethyl-2,3-dihydro-1H-imidazo[1,2-a]-pyrimidin-5-one (Example 1j), in 3 ml of tetrahydrofuran. After stirring for 25 minutes at a temperature in the region of 20° C., 0.092 ml of benzoyl chloride is added. The reaction medium is stirred for 1 hour at ambient temperature before the addition of 1.5 ml of a saturated solution of sodium bicarbonate and ethyl acetate. The organic phase is successively separated, washed with a saturated aqueous solution of sodium chloride, dried over magnesium sulphate, filtered, and then concentrated under reduced pressure. After purification by silica column chromatography (eluent: dichloromethane/methanol: 98/02), 49 mg of (2S)-2-methyl-7-(morpholin-4-yl)-1-(phenylcarbonyl)-2-(trifluoromethyl)-2,3-dihydroimidazo[1,2-a]pyrimidin-5(1H)one are obtained in the form of a brown solid, the characteristics of which are the following:

Provenance & Evidence