Acetonitrile → N-(7-Phenoxy-1,8-naphthyridin-2-yl)-3-dimethylaminobenzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

The procedure is similar to that described in Example 1, but starting with 3-dimethylaminobenzoic acid (23.1 g), N,N'-carbonyldiimidazole (22.7 g) and 2-amino-7-phenoxy-1,8-naphthyridine (23.7 g). The product produced by precipitation in water (44 g; m.p. approximately 90° C.) is dissolved in boiling acetonitrile (1000 cc). After 3 hours' cooling at 4° C., the crystallised solid is separated by filtration, washed with acetonitrile (3×50 cc) and dried at 40° C. under reduced pressure (0.067 kPa). N-(7-Phenoxy-1,8-naphthyridin-2-yl)-3-dimethylaminobenzamide (32 g) is produced (m.p. 120° C.).

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