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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 79259Generated: October 28, 2026

Ethanol → HCID 67259831, compound

https://huagongshe.com/reaction/79259

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 67259581HCID 67259581—
CatalystIronHCID 23925—
SolventWaterHCID 962—
ProductHCID 67259831HCID 6725983197%

Reaction Conditions

Temperature85 °C

Reaction Steps

A mixture of 1-benzyl-3-ethyl-4-nitro-1H-indazole (46.0 mg, 0.164 mmol), iron powder (91.3 mg, 1.64 mmol) and ammonium chloride (4.4 mg, 0.082 mmol) was stirred in a 4:1 mixture of ethanol and water (5 mL) with heating to 85° C. for 60 minutes. The solvent was removed under reduced pressure. Ethyl acetate (4 mL) and triethylamine (1 mL) was added and the mixture was heated for 15 minutes at 85° C. After cooling, the mixture was filtered through glass fiber filter paper, rinsing with methanol, dichloromethane and ethyl acetate. The filtrate was concentrated under reduced pressure to provide 1-benzyl-3-ethyl-1H-indazol-4-amine as an oil (40 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08841455B2
Source datasetuspto-grants-2014_09
ORD IDord-e6fae5492da24fd1b1c3bbc42bdb3962
Source noteuspto-grants-2014_09