反应详情

温度

40 °C

(2R,4S)-4-{[3,5-Bis(trifluoromethyl)benzyl]-[5-(morpholin-4-yl)-pyrimidin-2-yl]}amino-2-ethyl-6-trifluoromethanesulfonyloxy-3,4-dihydro-2H-[1,5]naphthyridine-1-carboxylic acid ethyl ester (100 mg) is dissolved in dimethylsulfoxide (2 ml), and thereto is added a 2M solution (300 μl) of dimethylamine in tetrahydrofuran under ice-cooling. The mixture is stirred at 40° C. for 72 hours in a closed vessel, and partitioned by adding water and ethyl acetate to the reaction solution. The organic layer is washed with saturated brine and dried over magnesium sulfate, then concentrated under reduced pressure. The resulting residue is purified by column chromatography (silica gel; hexane:ethyl acetate=4:1→2:1) to give (2R,4S)-4-{[3,5-bis(trifluoromethyl)benzyl]-[5-(morpholin-4-yl)pyrimidin-2-yl]}amino-6-dimethylamino-2-ethyl-3,4-dihydro-2H-[1,5]naphthyridine-1-carboxylic acid ethyl ester (78 mg). MS (m/z): 682 [M+H]+.

1. temperaturecooling
2. custompartitioned
3. additionby adding water and ethyl acetate to the reaction solution
4. washThe organic layer is washed with saturated brine
5. dry with materialdried over magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe resulting residue is purified by column chromatography (silica gel; hexane:ethyl acetate=4:1→2:1)