反应详情

To a solution of 0.53 g of 1-(trifluoroacetyl)piperidin-4-amine in 100 mL of dichloromethane, 0.47 g of 7-oxo-7,8-dihydro-1,8-naphthyridine-2-carbaldehyde and 0.16 mL of acetic acid were added, and the mixture was stirred at room temperature for 45 minutes. The reaction mixture was added with 0.86 g of sodium triacetoxyborohydride and stirred at the same temperature for 5 hours. Thereto were added water, a saturated aqueous sodium hydrogen carbonate solution and chloroform, the organic layer was separated, and the aqueous layer was extracted with chloroform. Sodium chloride was further added to the aqueous layer, and the aqueous layer was extracted with chloroform. The organic layer and the extract were combined, the resultant solution was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The resultant residue was purified by silica gel column chromatography using an eluent of chloroform:methanol=20:1 to obtain 0.59 g of 7-(((1-(trifluoroacetyl)piperidin-4-yl)amino)methyl)-1,8-naphthyridin-2(1H)-one as a light orange foam.

1. stirringstirred at the same temperature for 5 hours
2. customa saturated aqueous sodium hydrogen carbonate solution and chloroform, the organic layer was separated
3. extractionthe aqueous layer was extracted with chloroform
4. additionSodium chloride was further added to the aqueous layer
5. extractionthe aqueous layer was extracted with chloroform
6. dry with materialthe resultant solution was dried over anhydrous magnesium sulfate
7. distillationthe solvent was distilled off under reduced pressure
8. customThe resultant residue was purified by silica gel column chromatography