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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 450041Generated: October 26, 2026

Sodium Hydroxide → 1-methyl-1H-indol-5-amine

https://huagongshe.com/reaction/450041

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
Reactant1H-Indole, 1-methyl-5-nitro-HCID 147322—
ReactantTin dichloride dihydrateHCID 43835034—
SolventEthyl AcetateHCID 8857—
Product1-methyl-1H-indol-5-amineHCID 276956428.9%

Reaction Steps

To 1-methyl-5-nitro-1H-indole (0.5 g, 2.84 mmol) in ethyl acetate (10 ml), tin (II) chloride hydrate (2.5 g, 11.4 mmol, 4 eq) was added and the reaction mixture stirred overnight at room temperature. The reaction mixture was basified with aqueous sodium hydroxide solution (pH 8) and the compound extracted using ethyl acetate. The crude compound obtained was purified by column chromatography over silica gel using ethyl acetate/hexane (1:1) as eluent to give 1-methyl-1H-indol-5-ylamine (120 mg, 27%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08486962B2
Source datasetuspto-grants-2013_07
ORD IDord-f2a51d32b9ed447884bbcdbf7db23b96
Source noteuspto-grants-2013_07