反应详情

温度

62.5 °C

100 g of ivabradine base and 300 mL acetonitrile were cooled to 0° C. to 5° C. and acetonitrile hydrochloric acid solution was added drop wise by adjusting the pH to about 1-2. The resulting mass was stirred till complete precipitation and maintained for 60 minutes. The product was filtered under nitrogen and washed with chilled acetonitrile. The wet-cake and acetonitrile were heated at 60-65° C. and stirred for 30 min. The reaction mixture was gradually cooled to 25° C. and stirred for 1 hour. The product was filtered under vacuum and nitrogen atmosphere. The wet-cake was washed with chilled acetonitrile. The product was dried under vacuum at 50-55° C. to obtain 75% 80 g crude ivabradine hydrochloride. The product was packed in double polyethene bag under nitrogen.

1. temperaturemaintained for 60 minutes
2. filtrationThe product was filtered under nitrogen
3. washwashed with chilled acetonitrile
4. stirringstirred for 30 min
5. temperatureThe reaction mixture was gradually cooled to 25° C.
6. stirringstirred for 1 hour
7. filtrationThe product was filtered under vacuum and nitrogen atmosphere
8. washThe wet-cake was washed with chilled acetonitrile
9. customThe product was dried under vacuum at 50-55° C.