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  • Title: Indium-mediated regio- and chemoselective synthesis of alpha-hydroxyalkyl allenic esters and gold-catalyzed cyclizations to ethyl 2-naphthoate derivatives.
    Author: Park C, Lee PH.
    Journal: Org Lett; 2008 Aug 07; 10(15):3359-62. PubMed ID: 18613690.
    Abstract:
    The regio- and chemoselective synthetic method of functionalized alpha-hydroxyalkyl allenic esters was developed from the reactions of various aldehydes with organoindium reagent generated in situ from indium and ethyl 4-bromobutynoate. The alpha-hydroxyalkyl allenic esters possessing electron-donating groups were cyclized to ethyl 2-naphthoate derivatives through intramolecular C-alkylation catalyzed by gold salts.
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