[F:1][C:2]1[CH:9]=[CH:8][C:7]([F:10])=[CH:6][C:3]=1[CH:4]=O.[C:11]([OH:17])(=[O:16])[CH2:12]C(O)=O.C([O-])(=O)C.[NH4+:22]>C(O)C>[NH2:22][CH:4]([C:3]1[CH:6]=[C:7]([F:10])[CH:8]=[CH:9][C:2]=1[F:1])[CH2:12][C:11]([OH:17])=[O:16]A solution of 2,5-difluorobenzaldehyde (5 g), malonic acid (3.66 g) and ammonium acetate (5.42 g) in ethanol (50 ml) was heated under reflux for six hours. The mixture was cooled and left to stand overnight. The crystals formed were filtered off and washed with ethanol (5 ml).
불러오는 중…