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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 706765Generated: October 30, 2026

Benzyl Bromide → 1-benzyl-4-nitro-1H-indazole

https://huagongshe.com/reaction/706765

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzyl BromideHCID 7498—
ReactantPotassium HydroxideHCID 14797—
Reactant4-NitroindazoleHCID 18057—
SolventAcetoneHCID 180—
Product1-benzyl-4-nitro-1H-indazoleHCID 2132725633%

Reaction Steps

To a solution of 4-nitro-1H-indazole (0.500 g, 3.06 mmol) in acetone (0.4M, 7.5 mL) cooled to 0° C. was added KOH (0.258 g, 4.60 mmol). After 15 minutes at 0° C., (bromomethyl)benzene (0.400 mL, 3.37 mmol) was added. The reaction mixture was allowed to stir at ambient temperature overnight. The reaction mixture was concentrated under reduced pressure and the residue was purified by column chromatography (50% EtOAc/hexanes) providing 256 mg (33%) of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09174981B2
Source datasetuspto-grants-2015_11
ORD IDord-66f51c5a7b664f1aae40a7487ce1679c
Source noteuspto-grants-2015_11