反应详情

温度

20 °C

5.12 ml of triethylamine and 2.8 g of methyl α-aminoisobutyrate hydrochloride are added to a solution of 4 g of 4-trifluoromethylsulfanylphenyl isocyanate in 40 ml of toluene, under an inert atmosphere of argon at a temperature in the region of 20° C. The mixture thus obtained is refluxed for 24 hours and then cooled to a temperature in the region of 20° C. The reaction mixture is concentrated to dryness under reduced pressure and the residue obtained is taken up in ethyl ether and filtered. 5.3 g of 5,5-dimethyl-3-(4-trifluoromethylsulfanylphenyl)-imidazolidine-2,4-dione are thus obtained, the characteristics of which product are as follows:

1. customThe mixture thus obtained
2. temperatureis refluxed for 24 hours
3. concentrationThe reaction mixture is concentrated to dryness under reduced pressure
4. customthe residue obtained
5. filtrationfiltered