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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 223368Generated: October 30, 2026

Ammonium Hydroxide → 9-(2-Phenylethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-one

https://huagongshe.com/reaction/223368

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium HydroxideHCID 14923—
Reactant9-(2-Phenylethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-one hydrochloride saltHCID 20522037—
SolventWaterHCID 962—
Product9-(2-Phenylethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-oneHCID 1306173197.1%

Reaction Steps

A solution of 3.5 g of 9-(2-phenylethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-one hydrochloride salt in water (50 ml) was adjusted to pH 12 with ammonium hydroxide solution and extracted with methylene chloride. The methylene chloride was evaporated to afford 3 g of 9-(2-phenylethyl)-1-oxa-4,9-diazaspiro-[5.5]undecan-3-one as the free base, m.p. 140°-141° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04353900
Source datasetuspto-grants-1982_10
ORD IDord-bcfb491ae45242598e8c243c3df35004
Source noteuspto-grants-1982_10