反应详情

To a stirred suspension of 4-amino-5-chloro-N-[2-(diethylamino)ethyl]-2-hydroxybenzamide hydrochloride (19.4 g, 60 mmoles), potassium carbonate (41.6 g, 0.3 moles) and sodium iodide (10 g) in DMF (100 ml) was added 3-chloro-2-butanone (9.5 g, 89 mmoles) and the mixture vigorously stirred and heated to 70°-80° for 2 hours followed by cooling and partition between water and methylene chloride. The organic phase was washed with water, dried and concentrated. The residue was treated with 2N HCl and azeotroped with n-propanol, and crystallized from acetone to give 19.0 g (81%) of the title compound mp 177°-179°.

1. temperatureheated to 70°-80° for 2 hours
2. temperatureby cooling
3. custompartition between water and methylene chloride
4. washThe organic phase was washed with water
5. customdried
6. concentrationconcentrated
7. additionThe residue was treated with 2N HCl
8. customazeotroped with n-propanol
9. customcrystallized from acetone