反应详情

Into 10 ml of anhydrous tetrahydrofuran were dissolved 0.3 g of 2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidine-1-yl]phenol, 0.199 g of methyl 2-[3-(1-hydroxyethyl)phenoxy]propionate and 0.232 g of triphenylphosphine; 0.179 g of dilsopropyl azodicarboxylate was added dropwise under ice-cooling and stirring and the mixture was stirred overnight at room temperature. The reaction solution was concentrated under reduced pressure; the obtained residue was subjected to silica gel column chromatography to give methyl 2-[3-(1-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidine-1-yl]phenoxy}ethyl)phenoxy]propionate [Compound 2-21].

1. temperaturecooling
2. stirringthe mixture was stirred overnight at room temperature
3. concentrationThe reaction solution was concentrated under reduced pressure