Beilstein J. Org. Chem.2013,9, 2224–2232, doi:10.3762/bjoc.9.261
were also successfully synthesized and characterized by X-ray crystal diffraction. A weak gold-πinteraction between the Au atom and the aromatic ring in these gold complexes was identified. Furthermore, we confirmed the formation of a pair of diastereomeric isomers in NHC gold complexes bearing an
product in moderate yields and up to 29% ee.
Keywords: asymmetric gold catalysis; chiral Au catalysts; gold-πinteraction; NHC gold complex; Introduction
After the long-held assumption of the non-reactivity of gold complexes, numerous reactions catalyzed by gold complexes have emerged in the last 2
catalysts based on the binaphthyl skeleton.
Very recently, Echavarren’s group has reported a very important gold–arene interaction in dialkylbiarylphosphane gold complexes, which is very useful in gold catalysis [54]. It has been disclosed that there was a weak gold-πinteraction between the gold atom and
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Graphical Abstract
Figure 1:
Monodentate chiral NHC gold catalysts in recent years.