反应 #1135874

反应方程式

morpholine

2-((3-((4-fluorophenyl)ethynyl)imidazo[1,2-a]pyridin-2-yl)methoxy)acetyl chloride

water

→

2-((3-((4-fluorophenyl)ethynyl)imidazo[1,2-a]pyridin-2-yl)methoxy)-1-morpholino ethanone

收率 58.0%

溶剂

dichloromethane

dichloromethane

反应条件

后处理

1. 1
   workup.ADDITIONthe mixture was added at r.t. for 1 h
2. 2
   萃取The aqueous phase was extracted with 2×5 ml of dichloromethane
3. 3
   洗涤The combined organic phases were washed with 5 ml of a saturated NaCl aqueous solution
4. 4
   其他dried on Na2SO4 which
5. 5
   其他was then removed by filtration
6. 6
   浓缩The obtained filtrate was concentrated in vacuo
7. 7
   其他The crude residue was purified by flash chromatography on a silica gel cartridge (eluent: ethyl acetate 100%)

实验过程

0.806 ml (9.25 mmol) of morpholine were solubilised in 4 ml of dichloromethane with magnetic stirring, a solution of 2-((3-((4-fluorophenyl)ethynyl)imidazo[1,2-a]pyridin-2-yl)methoxy)acetyl chloride in 4 ml of dichloromethane was added and then the mixture was added at r.t. for 1 h before being treated with 10 ml of water. The aqueous phase was extracted with 2×5 ml of dichloromethane. The combined organic phases were washed with 5 ml of a saturated NaCl aqueous solution, dried on Na2SO4 which was then removed by filtration. The obtained filtrate was concentrated in vacuo. The crude residue was purified by flash chromatography on a silica gel cartridge (eluent: ethyl acetate 100%). 0.211 g (yield=58%) of 2-((3-((4-fluorophenyl)ethynyl)imidazo[1,2-a]pyridin-2-yl)methoxy)-1-morpholino ethanone were obtained as a pale yellow solid. LC-MS: m/z=394 (MH+); UV purity at 254 nm=99%. 1H NMR (300 MHz, DMSO) δ 8.62 (d, J=6.8 Hz, 1H), 7.74 (dd, J=8.7, 5.5 Hz, 2H), 7.67 (d, J=9.0 Hz, 1H), 7.50-7.39 (m, 1H), 7.33 (t, J=8.9 Hz, 2H), 7.12 (t, J=6.8 Hz, 1H), 4.75 (s, 2H), 4.27 (s, 2H), 3.55-3.46 (m, 4H), 3.39 (s, 4H).

来源