反应详情

To aminoacetoaldehyde diethylacetal (7.8 ml, 53.6 mmol) was added dropwise 10 g (53.4 mmol) of 4-trifluoromethylphenylisocyanate at 0° C. during five minutes. The reaction solution was stirred for one hour at room temperature. The crystals thus produced was collected by filtration and washed with hexane to give 16.2 g of 1-(2,2-diethoxyethyl)-3-(4-trifluoromethylphenyl)urea (95%) as a colorless powder.

1. customThe crystals thus produced
2. filtrationwas collected by filtration
3. washwashed with hexane