Ethanol → N-(7Chloro-1,8-naphthyridin-2-yl)-1,4-cyclohexadiene-1-carboxamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

The procedure is similar to that described in Example 1, but starting with 1,4-cyclohexadiene-1-carboxylic acid (6.2 g), N,N'-carbonyldiimidazole (8 g) and 2-amino-7-chloro-1,8-naphthyridine (8 g). The product produced by precipitation in water (11 g; m.p. 205° C.) is dissolved in boiling ethanol (250 cc). After 2 hours' cooling at 4° C., the crystallised solid is separated by filtration, washed with ethanol (3×15 cc) and dried at 40° C. under reduced pressure (0.067 kPa). N-(7Chloro-1,8-naphthyridin-2-yl)-1,4-cyclohexadiene-1-carboxamide (4.2 g) is produced, m.p. 210° C.

Herkunft & Nachweise