Hydrazine hydrate (1:1) → HCID 178526733, compound

Participants

Reaction Steps

Hydrazine monohydrate (1.91 ml) was added to an EtOH (40 ml) solution containing methyl 2,3-difluoro-5-nitrobenzoate (1.71 g) obtained in the 2nd step, followed by stirring at room temperature for 10 minutes. An insoluble precipitate was removed by filtration and washed with EtOH. 7-Fluoro-5-nitro-1H-indazol-3-ol (956 mg) was thus obtained.

Provenance & Evidence