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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 469361Generated: October 31, 2026

Methyl iodide → 5-Bromo-1,7-dimethyl-1H-indazole

https://huagongshe.com/reaction/469361

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
Reactant5-Bromo-7-methyl-1H-indazoleHCID 1382033—
ReactantPotassium tert-butoxideHCID 23665647—
SolventTetrahydrofuranHCID 8028—
Product5-Bromo-1,7-dimethyl-1H-indazoleHCID 37819125—

Reaction Steps

2.11 g (10.0 mmol) 5-bromo-7-methyl-1H-indazole and 1.20 g (10.7 mmol) potassium-tert-butoxide in 50 mL THF were stirred overnight with 0.700 mL (11.2 mmol) iodomethane at RT. Then the precipitate was filtered off and the filtrate was evaporated down i. vac. The residue was purified by flash chromatography.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08629137B2
Source datasetuspto-grants-2014_01
ORD IDord-3f0f4946ab2a46da9cfb3e153dd839a0
Source noteuspto-grants-2014_01