反应详情

Ketorolac (25 g) and 11.9 g tromethamine were dissolved in 175 mL methanol. The solution was filtered and the filter washed with 40 mL methanol. The resulting solution was concentrated by vacuum distillation. Ethyl acetate (1×172 mL), (1×200 mL) was added to the solution to precipitate the ketorolac tromethamine; and the solution was cooled to room temperature for two hours, cooled further to 0° C., and filtered. The precipitate was washed with ethyl acetate/methanol (4:1 v/v) and dried under vacuum at a temperature of approximately 65° C., to yield ketorolac tromethamine (35.0 g, 95% yield).

1. filtrationThe solution was filtered
2. washthe filter washed with 40 mL methanol
3. concentrationThe resulting solution was concentrated by vacuum distillation
4. additionEthyl acetate (1×172 mL), (1×200 mL) was added to the solution
5. customto precipitate the ketorolac tromethamine
6. temperaturecooled further to 0° C.
7. filtrationfiltered
8. washThe precipitate was washed with ethyl acetate/methanol (4:1 v/v)
9. customdried under vacuum at a temperature of approximately 65° C.