Highly asymmetric synthesis of (+)-corsifuran A. Elucidation of the electronic requirements in the Ruthenium–NHC catalyzed hydrogenation of benzofurans
synthesis of ent-corsifuran A by a highlyasymmetrichydrogenation of a benzofuran precursor is reported. In addition, the electronic influence of the substituents on the asymmetrichydrogenation of benzofurans is provided. Whereas the hydrogenation of electron-deficient benzofurans was achieved under very mild conditions, the presence of electron-donating groups in the benzofuran required harsher reaction