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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 573325Generated: November 2, 2026

3-[5-(Benzyloxy)pyridin-2-yl]-1-ethyl-1H-pyrazolo[4,3-b]pyridine → 6-(1-Ethyl-1H-pyrazolo[4,3-b]pyridin-3-yl)pyridin-3-ol

https://huagongshe.com/reaction/573325

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-[5-(Benzyloxy)pyridin-2-yl]-1-ethyl-1H-pyrazolo[4,3-b]pyridineHCID 66728031—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
SolventEthyl AcetateHCID 8857—
Product6-(1-Ethyl-1H-pyrazolo[4,3-b]pyridin-3-yl)pyridin-3-olHCID 13639769084.1%

Reaction Steps

A mixture of 3-[5-(benzyloxy)pyridin-2-yl]-1-ethyl-1H-pyrazolo[4,3-b]pyridine (224 mg) and 10% Pd—C (50% wet, 78 mg) in MeOH (3 mL) and AcOEt (3 mL) was hydrogenated under balloon pressure at room temperature overnight. The solid was filtrated and washed with MeOH (50 mL×3). The filtrate was concentrated under reduced pressure. The precipitate was collected by filtration and washed with 25% AcOEt in hexane to give the title compound (137 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09029536B2
Source datasetuspto-grants-2015_05
ORD IDord-3e0f702e81204017a5a98ed8fd300d13
Source noteuspto-grants-2015_05