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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2040894Generated: October 31, 2026

1,5-Dioxaspiro[5.5]undecan-9-one → 9-Methylidene-1,5-dioxaspiro[5.5]undecane

https://huagongshe.com/reaction/2040894

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,5-Dioxaspiro[5.5]undecan-9-oneHCID 10313300—
Reactanttert-Butyl 3-methylideneazetidine-1-carboxylateHCID 55269097—
Product9-Methylidene-1,5-dioxaspiro[5.5]undecaneHCID 57493860—

Reaction Steps

The title compound was prepared following the methodology described for Compound 28a replacing 1-Boc-3-azetidinone with 7,11-dioxaspiro[5.5]undecan-3-one. After the usual work-up procedure, the residue was purified by means of automated flash chromatography (SP01®TM-Biotage; Et2O) to give the title compound as a pale-yellow oil. Yield: 96.3%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08580962B2
Source datasetuspto-grants-2013_11
ORD IDord-7ed4c19434d44a6b98126ccf2a6640a8
Source noteuspto-grants-2013_11