反应详情

A solution of 7-benzyloxy-4-chloro-6-methoxycinnoline hydrochloride (3.4 g, 10 mmol) and 4-chloro-2-fluoro-5-hydroxyaniline, (prepared as described in EP 061741 A2), (1.84 g, 11 mmol) in DMF (42 ml) was heated at 130° C. for 20 minutes. The resulting solid was filtered off, washed with isopropanol, ether and dried under vacuum to give 7-benzyloxy-4-(4-chloro-2-fluoro-5-hydroxyanilino)-6-methoxycinnoline as the hydrochloride salt (yellow solid. 3.5 g, 75%).

1. filtrationThe resulting solid was filtered off
2. washwashed with isopropanol, ether
3. customdried under vacuum