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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1943889Generated: November 2, 2026

Methyl iodide → 5-bromo-3-methoxy-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridine

https://huagongshe.com/reaction/1943889

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
ReactantSodium hydrideHCID 24758—
ReactantHCID 178490916HCID 178490916—
SolventDimethylformamideHCID 6228—
Product5-bromo-3-methoxy-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridineHCID 6708882952.7%

Reaction Steps

5-Bromo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-3-ol (0.200 g, 0.599 mmol) was dissolved in DMF. Sodium hydride (0.0287 g, 0.718 mmol) was added and stirred for 10 minutes. Methyl iodide (0.0448 mL, 0.718 mmol) was added, and the reaction mixture was stirred overnight. The solution was partitioned between water and EtOAc. The organic layer was washed with water (3×), brine, dried over Na2SO4 and concentrated to an oil, which was purified by column chromatography (2:1 hexanes/EtOAc) to give 5-bromo-3-methoxy-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridine (0.11 g, 52.3%) as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08394795B2
Source datasetuspto-grants-2013_03
ORD IDord-548c7dd7069f4ef68615f745575c500f
Source noteuspto-grants-2013_03