反应详情

温度

4 °C

The procedure is similar to that described in Example 1, but starting with 2-furancarboxylic acid (7.5 g), N,N'-carbonyldiimidazole (10.9 g) and 2-amino-7-phenoxy-1,8-naphthyridine (11.9 g). The product produced by precipitation in water (15.7 g; m.p. 164° C.) is dissolved in boiling ethanol (200 cc). After 2 hours' cooling at 4° C., the crystallised solid is separated by filtration, washed with ethanol (15 cc) and dried at 40° C. under reduced pressure (0.067 kPa). N-(7-Phenoxy-1,8-naphthyridin-2-yl)-2-furancarboxamide (14.4 g) is produced, m.p. 167° C.

1. dissolutionis dissolved
2. customthe crystallised solid is separated by filtration
3. washwashed with ethanol (15 cc)
4. customdried at 40° C. under reduced pressure (0.067 kPa)