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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 968488Generated: October 28, 2026

Potassium Carbonate → hexahydro-1-[2-(4-methoxyphenyl)ethyl]-4H-azepin-4-one

https://huagongshe.com/reaction/968488

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant8-[2-(4-Methoxyphenyl)ethyl]-1,4-dioxa-8-azaspiro[4.6]undecaneHCID 69282949—
SolventHydrochloric AcidHCID 313—
SolventTetrahydrofuranHCID 8028—
Producthexahydro-1-[2-(4-methoxyphenyl)ethyl]-4H-azepin-4-oneHCID 6928294693.2%

Reaction Conditions

Temperature60 °C

Reaction Steps

A mixture of intermediate (6) (0.098 mol) in HCl (3 N, 300 ml) and THF (300 ml) was stirred at 60° C. for 1 hour. The mixture was basified with solid K2CO3 and extracted with ethyl acetate. The organic layer was separated, dried, filtered and the solvent was evaporated, yielding 22.6 g of hexahydro-1-[2-(4-methoxyphenyl)ethyl]-4H-azepin-4-one (intermediate 7).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07304052B2
Source datasetuspto-grants-2007_12
ORD IDord-2ae045344984407ca46a2b8df1f9ddfa
Source noteuspto-grants-2007_12