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  • Title: Enantio- and diastereoselective assembly of tetrahydrofuran and tetrahydropyran skeletons with all-carbon-substituted quaternary stereocenters.
    Author: Chen Z, Sun J.
    Journal: Angew Chem Int Ed Engl; 2013 Dec 16; 52(51):13593-6. PubMed ID: 24254193.
    Abstract:
    Chiral phosphoric acids (HB*) catalyze the asymmetric desymmetrization of meso 1,3-diols through mono-transacetalization with a tethered acetal unit. This new strategy leads to the efficient assembly of tetrahydrofuran and tetrahydropyran skeletons bearing remote all-carbon-substituted quaternary stereocenters that are not straightforward to access by other methods.
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