反应详情

温度

90 °C

A mixture of 3-(3,5-dimethoxy-phenyl)-1-ethyl-7-methanesulfinyl-3,4-dihydro-pyrimido[4,5-d]pyrimidin-2(1H)-one (0.5 g, 1.33 mmol), 4-diethylaminobutylamine (0.38 g, 2.66 mmol,) and trifluoroacetic acid (0.31 g, 2.66 mmol) in acetonitrile (6 mL) was heated in a sealed tube at 90° C. for 18 hours. The solvent was removed under reduced pressure and the residue taken up in 1N HCl. The solution was made basic with 50% NaOH and extracted twice with dichloromethane. The combined organic layers were dried over magnesium sulfate, filtered, and evaporated. The residue was purified by radial chromatography eluting with a solvent mixture of ethyl acetate/methanol/ethyl (89:10:1 v/v/v) to give 0.34 g (56%) of the titled compound: mp 83-85° C. Mass Spectrum (APCI, 80/20 CH3CN/H2O, Probe=450° C.) (m+1)/z 458.2

1. customThe solvent was removed under reduced pressure
2. extractionextracted twice with dichloromethane
3. dry with materialThe combined organic layers were dried over magnesium sulfate
4. filtrationfiltered
5. customevaporated
6. customThe residue was purified by radial chromatography
7. washeluting with a solvent mixture of ethyl acetate/methanol/ethyl (89:10:1 v/v/v)