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  • Title: Golden times for allenes: Gold-catalyzed cycloisomerization of beta-hydroxyallenes to dihydropyrans.
    Author: Gockel B, Krause N.
    Journal: Org Lett; 2006 Sep 28; 8(20):4485-8. PubMed ID: 16986931.
    Abstract:
    The gold(I)-catalyzed 6-endo cycloisomerization of beta-hydroxyallenes provides a mild and efficient access to chiral functionalized dihydropyrans which were obtained at room temperature in good chemical yields with axis-to-center chirality transfer. The method was extended to the beta-aminoallene 12, which afforded tetrahydropyridine 13 in good yield as well.
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