Water → HCID 178514869, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 4-hydroxy-3-phenylacetyl-1-(3-trifluoromethylphenyl)-1,8-naphthyridine-2(1H)-one (212 mg, 0.50 mmol) produced in Synthesis Example 2 in DMF (4 mL) was added hydrazine monohydrate (purity of 80%, 80 μL), and the mixture was stirred at 100 to 110° C. for 3 hours. To the reaction solution was added water. The resulting precipitate was separated by filtration, washed with water, and dried to give 3-benzyl-5-(3-trifluoromethylphenyl)-1H-pyrazolo[4,3-c][1,8]-naphthyridin-4(5H)-one as a form of crystal (172 mg, yield 82%).

Provenance & Evidence