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
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Sodium Methoxide | HCID 10942334 | — |
| Reactant | 4-chloro-5H,6H,7H-cyclopenta[b]pyridine | HCID 12203327 | — |
| Solvent | Hydrochloric Acid | HCID 313 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 4-Methoxy-6,7-dihydro-5H-cyclopenta[b]pyridine | HCID 86726683 | 44% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US09278950B2 |
|---|
| Source dataset | uspto-grants-2016_03 |
|---|
| ORD ID | ord-001833d127c343ab84b58eecb4e33c70 |
|---|
| Source note | uspto-grants-2016_03 |
|---|