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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 127270Generated: October 27, 2026

Hydrochloric Acid → 8-[2-(3-Indolyl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one hydrochloride

https://huagongshe.com/reaction/127270

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDiethyl EtherHCID 3283—
Reactant8-[2-(3-Indolyl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-oneHCID 13016615—
SolventIsopropanolHCID 3776—
Product8-[2-(3-Indolyl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one hydrochlorideHCID 20286519—

Reaction Steps

To a solution of 2 g 8-[2-(3-indolyl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one in 20 ml i-propyl alcohol is added sufficient 3% methanolic hydrogen chloride to make the solution acid to litmus. Addition of 250 ml diethyl ether followed by filtration affords 1.89 g 8-[2-(3-indolyl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one hydrochloride, mp 249°-254° (d).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04255432
Source datasetuspto-grants-1981_03
ORD IDord-32741250efb94149956c807f36eb28ae
Source noteuspto-grants-1981_03