Water → 3-(2,5-Dichlorophenoxy)-1,1-dimethyl urea

Reaktionsgleichung

[Cl:1][C:2]1[CH:9]=[CH:8][C:7]([Cl:10])=[CH:6][C:3]=1[O:4][NH2:5].[CH3:11][N:12]([CH3:16])[C:13](Cl)=[O:14].O>N1C=CC=CC=1>[Cl:1][C:2]1[CH:9]=[CH:8][C:7]([Cl:10])=[CH:6][C:3]=1[O:4][NH:5][C:13](=[O:14])[N:12]([CH3:16])[CH3:11]

Komponenten

Versuchsvorschrift

5.00 g (28.1 mmoles) of 2,5-dichlorophenoxyamine was dissolved in 6.8 ml of pyridine, and then 3.02 g (28.1 mmoles) of dimethylcarbamoyl chloride was added. The mixture was stirred at a temperature of from 25° to 30° C. for 12 hours. After an addition of 200 ml of water, the reaction mixture was extracted with ethyl acetate. The extract was washed with a saturated sodium chloride aqueous solution, and dried over anhydrous magnesium sulfate. Ethyl acetate was distilled off under reduced pressure, and precipitated crystals were washed with hexane, whereby 4.33 g of the desired product was obtained as light yellow crystals (yield: 62%).