Relay Catalysis Using a Rhodium Complex/Chiral Brønsted Acid Binary System: Enantioselective Reduction of a Carbonyl Ylide as the Reactive Intermediate
作者:Masahiro Terada、Yasunori Toda
DOI:10.1002/anie.201107805
日期:2012.2.27
Pass the baton: A one‐pot relay catalysis for a carbonylylide formation/enantioselective reduction sequence using a dirhodium(II) tetracarboxylate and chiral phosphoric acid catalystsystem is described. The four‐step transformation involves a rhodium carbene complex, a carbonylylide, and an isobenzopyrylium intermediate, the enantioselective reduction of which yields isochromanone derivatives in