Asymmetric Alkynylation of β-Ketoesters and Naphthols Promoted by New Chiral Biphenylic Iodanes
作者:Simon Companys、Philippe A. Peixoto、Cyril Bosset、Stefan Chassaing、Karinne Miqueu、Jean-Marc Sotiropoulos、Laurent Pouységu、Stéphane Quideau
DOI:10.1002/chem.201703238
日期:2017.9.27
The preparation of new chiral biphenylic λ3‐iodane reagents bearing transferable alkynyl ligands is described. These reagents transfer their carbon‐based ligands onto β‐ketoesters with an enantiomeric excess (ee) up to 68 %, and most remarkably, enable the dearomative alkynylation of naphthols in good to high yields up to 84 % ee.
新的手性biphenylic的λ制备3种-iodane试剂轴承转让炔基配体进行说明。这些试剂以高达68%的对映体过量(ee)将其碳基配体转移到β-酮酸酯上,最显着的是,可以使萘酚脱芳基烷基化,产率高达84% ee。