Acetonitrile → N-(7-Chloro-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 (6.6 g), N,N'-carbonyldiimidazole (6.5 g) and 2-amino-7-chloro-1,8-naphthyridine (5.4 g). The product produced by precipitation in water (9 g; m.p. 212° C.) is dissolved in boiling acetonitrile (400 cc). After 3 hours' cooling at 4° C., the crystallised solid is separated by filtration, washed with acetonitrile (3×20 cc) and dried at 40° C. under reduced pressure (0.067 kPa). N-(7-Chloro-1,8-naphthyridin-2-yl)-3-dimethylaminobenzamide (6.2 g) is produced, m.p. 215° C.

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