反应详情

温度

22.5 °C

To a solution of (3R)-3-({5-[(1E)-3-methoxy-3-oxo-1-propen-1-yl]-2-pyrazinyl}amino)-1-pyrrolidinecarboxylate (10.50 g) in 1,2-dichloroethane (100 mL) was added a 4N HCl in dioxane (100 mL) and the mixture was stirred at 20-25° C. for 2 hours under nitrogen atmosphere to give a solid. The solid was collected by filtration to give methyl (2E)-3-{5-[(3R)-3-pyrrolidinylamino]-2-pyrazinyl}acrylate dihydrochloride (9.73 g).

1. customto give a solid
2. filtrationThe solid was collected by filtration