反应详情

Following the procedure of Example 28, but starting from 2-(7-chloro-1,8-naphthyridin-2-yl)-3-hydroxy-6-trifluoromethyl-1-isoindolinone (4.8 g.), 1-chlorocarbonyl-4-methyl-piperazine hydrochloride (15.1 g.), triethylamine (14.2 cc., equivalent to 10.2 g.) and pyridine (66 cc.) in methylene chloride (250 cc.), a crude product (7.8 g.) is obtained, which is triturated with water (50 cc.). The solid obtained is filtered off and washed with water (30 cc.). After recrystallisation from isopropanol (240 cc.), 2-(7-chloro1,8-naphthyridin-2-yl)-3-(4-methyl-piperazinyl)carbonyloxy-6-trifluoromethyl-1-isoindolinone (4.7 g.) melting at 219° C is obtained.

1. customa crude product (7.8 g.) is obtained
2. customwhich is triturated with water (50 cc.)
3. customThe solid obtained
4. filtrationis filtered off
5. washwashed with water (30 cc.)
6. customAfter recrystallisation from isopropanol (240 cc.)