Water → 4-cyclohexylacetoxy-1-phenyl-1,8-naphthyridin-2(1H)-one

참여 물질

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In accordance with a process described in JP-61-246183A, 4-hydroxy-1-phenyl-1,8-naphthyridin-2(1H)-one was synthesized. To a suspension of the synthesized compound (953 mg, 4.0 mmol) in DMF (32 mL) was added sodium hydride (purity of about 60%, 176 mg, 4.4 mmol, 1.1 eq.), and the mixture was stirred at a room temperature for 35 minutes. Then, cyclohexylacetyl chloride (4.8 mmol, 1.2 eq.) was added thereto with cooling in an ice bath, and the mixture was stirred at a room temperature for 80 minutes. Thereafter, water was added to the reaction mixture, and the precipitate was separated by filtration and dried to give 4-cyclohexylacetoxy-1-phenyl-1,8-naphthyridin-2(1H)-one as a form of crystal (1.33 g, yield 91%).

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