反应 #1328444

反应方程式

isoamyl nitrite

methyl [3-{2-amino-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]acetate

hydrochloric acid

→

methyl [3-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]-acetate

溶剂

acetonitrile

反应条件

后处理

1. 1
   萃取the mixture was extracted with ethyl acetate
2. 2
   洗涤The organic layer was washed with saturated aqueous sodium chloride solution
3. 3
   干燥dried over anhydrous magnesium sulfate
4. 4
   浓缩concentrated

实验过程

First, 88 mg of isoamyl nitrite was added dropwise to a mixture of 0.24 g of methyl [3-{2-amino-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]acetate, 99 mg of copper(I) chloride, 0.20 g of copper(II) chloride, and 2.5 ml of acetonitrile at room temperature, and the mixture was stirred for 1 hour. The reaction mixture was poured into 2% hydrochloric acid, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and then concentrated. The residue was subjected to silica gel column chromatography to give 0.21 g of methyl [3-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]-acetate (compound a-6).

来源