Cesium carbonate → (8S)-2-chloro-9-(2-oxo-2-pyrid-2-ylethyl)-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one

Beteiligte Stoffe

Reaktionsschritte

150 mg (0.591 mmol) of (8S)-2-chloro-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one, 578.71 mg (1.77 mmol) of cesium carbonate, 199.40 mg (0.709 mmol) of 2-bromo-1-pyrid-2-ylethanone hydrobromide and 10 mL of acetonitrile were used in the reaction. After purification by chromatography on silica gel (eluent A/B: heptane/EtOAc, gradient A/B: t 0 min 0% B, t 15 min 50% B, t 25 min 70% B), 218 mg of (8S)-2-chloro-9-(2-oxo-2-pyrid-2-ylethyl)-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one were obtained, corresponding to the following characteristics:

Herkunft & Nachweise