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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 924398Generated: November 1, 2026

Methanol → 4-Methoxy-6,7-dihydro-5H-cyclopenta[b]pyridine

https://huagongshe.com/reaction/924398

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantSodium MethoxideHCID 10942334—
Reactant4-chloro-5H,6H,7H-cyclopenta[b]pyridineHCID 12203327—
SolventHydrochloric AcidHCID 313—
SolventEthyl AcetateHCID 8857—
Product4-Methoxy-6,7-dihydro-5H-cyclopenta[b]pyridineHCID 8672668344%

Reaction Conditions

Temperature110 °C

Reaction Steps

A mixture of 4-chloro-6,7-dihydro-5H-cyclopenta[b]pyridine (2.8 g, 18 mmol), MeOH (20 mL) and sodium methoxide (3.0 g, 56 mmol) was sealed in a pressurized flask and heated at 110° C. for 18 h. The mixture was diluted with EtOAc and neutralized with HCl to pH=1. The organic solvent was removed under reduced pressure. The resulting mixture was washed with ether twice, and neutralized with aq. Na2CO3. The aqueous layer was extracted twice with EtOAc. The combined organic extracts were dried, filtered and concentrated under reduced pressure to give the sub-title compound (1.20 g, 44%). LCMS calc. for C9H12NO (M+H)+: m/z=150.3. Found: 150.2.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09278950B2
Source datasetuspto-grants-2016_03
ORD IDord-001833d127c343ab84b58eecb4e33c70
Source noteuspto-grants-2016_03