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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 656291Generated: October 28, 2026

5-Nitroindazole → 1H-Indazol-5-amine

https://huagongshe.com/reaction/656291

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-NitroindazoleHCID 21501—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
SolventDiethyl EtherHCID 3283—
Product1H-Indazol-5-amineHCID 88012100%

Reaction Steps

5-Nitro-1H-indazole (20 mg) was dissolved in methanol (1 ml) and to the solution was added a catalytic amount of palladium/carbon, followed by stirring at room temperature under hydrogen gas atmosphere for 30 minutes. The resulting mixture was diluted with ether, filtered through celite, and then concentrated under reduced pressure to yield 5-amino-1H-indazole (16 mg, 100%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08071650B2
Source datasetuspto-grants-2011_12
ORD IDord-347900d706664f0daec819316e759885
Source noteuspto-grants-2011_12