Water → 6-(Morpholine-4-carbonyl)-3,4-dihydroquinolin-2(1H)-one

Reaction equation

[NH:1]1[C:11]2[C:6](=[CH:7][C:8]([C:12]([O-:14])=O)=[CH:9][CH:10]=2)[CH2:5][CH2:4][C:2]1=[O:3].[NH:15]1[CH2:20][CH2:19][O:18][CH2:17][CH2:16]1.O>CN(C)C=O>[O:18]1[CH2:19][CH2:20][N:15]([C:12]([C:8]2[CH:7]=[C:6]3[C:11](=[CH:10][CH:9]=2)[NH:1][C:2](=[O:3])[CH2:4][CH2:5]3)=[O:14])[CH2:16][CH2:17]1

Participants

Procedure

1.0 Gram of succenimide 3,4-dihydrocarbostyril-6-carboxylate and 0.37 g of morpholine were dissolved in 2 ml of dimethylformamide and stirred at room temperature for 3 hours. Then water was added to the reaction mixture and extracted with chloroform, the chloroform layer was washed with water and a saturated sodium chloride aqueous solution in this order. After drying the chloroform layer with anhydrous sodium sulfate, then chloroform was removed by distillation under a reduced pressure, then acetone was added to the thus obtained residue to crystallize the product. 150 Milligrams of 6-morpholinocarbonyl-3,4-dihydrocarbostyril was obtained. Colorless granular crystals. Melting point: 206°-207° C. (from ethanol).