Methyl 2-[2-chloro-4-fluoro-5-{3-methyl-2,6-dioxo-4-(tri-fluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl}phenoxy]-4-bromobutanoate 、
potassium tert-butylate 在
盐酸 、
乙酸乙酯 、
magnesium sulfate 、
methyl 1-[2-chloro-4-fluoro-5-{3-methyl-2,6-dioxo-4-(trifluoro-methyl)-1,2,3,6-tetrahydropyrimidin-1-yl}phenoxy]cyclo-propanecarboxylate 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以to give 0.26 g of methyl 1-[2-chloro-4-fluoro-5-{3-methyl-2,6-dioxo-4-(trifluoro-methyl)-1,2,3,6-tetrahydropyrimidin-1-yl}phenoxy]cyclo-propanecarboxylate (Compound 1-2)的产率得到methyl 1-[2-chloro-4-fluoro-5-{3-methyl-2,6-dioxo-4-(trifluoro-methyl)-1,2,3,6-tetrahydropyrimidin-1-yl}phenoxy]cyclo-propanecarboxylate