[N+:1]([C:4]1[CH:9]=[C:8]([N+:10]([O-:12])=[O:11])[CH:7]=[CH:6][C:5]=1[OH:13])([O-:3])=[O:2].Br[CH:15]([CH2:18]Br)[CH2:16][OH:17].[C:20](=[O:23])([O-])[O-].[K+].[K+].[OH2:26]>CN(C)C=O>[OH:17][CH2:16][CH:15]([O:23][C:20]1[CH:6]=[CH:7][C:8]([N+:10]([O-:11])=[O:26])=[CH:9][C:4]=1[N+:1]([O-:3])=[O:2])[CH2:18][O:13][C:5]1[CH:6]=[CH:7][C:8]([N+:10]([O-:12])=[O:11])=[CH:9][C:4]=1[N+:1]([O-:3])=[O:2]A mixture of 19.2 gm (0.1 mol) of 2,4-dinitrophenol (96%), 13.6 gm (0.05 mol) of 2,3-dibromopropanol, and 6.9 gm (0.05 mol) of potassium carbonate was refluxed for eight hours in 20 ml of dimethylformamide. After cooling, the solution was poured into 1.5 liters of water, and the precipitated product was removed by suction and washed with water. The intermediate obtained melted with decomposition at 129° C.
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