反应详情

82.5 g 6-fluoro-2-indolinone (educt IV) are stirred in 180 ml acetic anhydride for 3 hours at 130° C. After cooling to ambient temperature the precipitate is suction filtered, washed with 100 ml of petroleum ether and dried.

1. filtrationfiltered
2. washwashed with 100 ml of petroleum ether
3. customdried