Hydrazine hydrate (1:1) → HCID 178514878, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 4-hydroxy-3-(2-nitrophenylacetyl)-1-(3-trifluoromethoxyphenyl)-1,8-naphthyridin-2(1H)-one (450 mg, 0.93 mmol) produced in Synthesis Example 31 in DMF (4 mL) was added hydrazine monohydrate (purity of 80%, 148 μL), and the mixture was stirred at 110 to 120° C. for 3 hours. To the reaction solution was added a sodium hydrogencarbonate aqueous solution. The resulting precipitate was separated by filtration, washed with water, and dried to give 3-(2-nitrobenzyl)-5-(3-trifluoromethoxyphenyl)-1H-pyrazolo[4,3-c][1,8]-naphthyridin-4(5H)-one as a form of crystal (373 mg, yield 84%).

Provenance & Evidence