[Br:1][C:2]1[CH:9]=[C:6]([CH:7]=O)[C:5]([OH:10])=[CH:4][CH:3]=1.Br[CH2:12][C:13](=[O:15])[CH3:14].C(=O)([O-])[O-].[K+].[K+]>CC(=O)CC>[C:13]([C:14]1[O:10][C:5]2[CH:4]=[CH:3][C:2]([Br:1])=[CH:9][C:6]=2[CH:7]=1)(=[O:15])[CH3:12]5-Bromo salicylaldehyde (10.05 g), bromo acetone (8.0 g) and potassium carbonate (13.80 g) were refluxed for 1 hr in 2-butanone (100 ml). 2-Butanone (ca. 50 ml) was evaporated and ice was added. The precipitate was collected by filtration and washed with water and hexane to give the objective compound (10.50 g).
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