反应详情

To a stirred suspension of sodium hydride (320 mg of 60%, 8 mmoles, washed with n-pentane) in DMF (15 ml) was added 4-amino-5-chloro-N-[2-(diethylamino)ethyl]-2-hydroxybenzamide hydrochloride (1.289 g, 4 mmoles) and the mixture stirred for 20 minutes followed by addition of chloroacetophenone (619 mg, 4 mmoles). The mixture was stirred 4 hours, poured into ice-cold water (50 ml) whereupon a solid separated out. This was isolated by filtration, dried and recrystallized from methanol to give 810 mg (50%) of the title compound as white solid mp 153°-4°. The NMR spectrum (90 MHz) in CDCl3 gave the following resonances: δ 8.64 (bs, 1H); 8.2 (s, 1H); 8 (m, 2H); 7.6 (m, 3H); 6.22 (s, 1H); 5.36 (s, 2H); 4.4 (s, 2H); 3.52 (m, 2H); 2.64 (m, 6H); 1.01 (m, 6H).

1. stirringThe mixture was stirred 4 hours
2. customseparated out
3. customThis was isolated by filtration
4. customdried
5. customrecrystallized from methanol