Abstract
3-Bromomethyl-2,8-dioxaspiro[4.4]nonane-1,6-diones were efficiently prepared from 3-ethoxycarbonyltetrahydrofuran-2-ones. Subsequent conversion of the bromomethyl group into azidomethyl one followed by click reaction with alkynes afforded the multifunctional triazole-containing spiro dilactones in almost quantitative yields.
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