Six-Membered, Chiral NHCs Derived from Camphor: Structure–Reactivity Relationship in Asymmetric Oxindole Synthesis
作者:Markus J. Spallek、Dominic Riedel、Frank Rominger、A. Stephen K. Hashmi、Oliver Trapp
DOI:10.1021/om201166b
日期:2012.2.13
A series of three chiral, expanded six-membered NHC–palladium(II) complexes was prepared with successively increased sterical demand, while retaining natural d-(+)-camphor as a chiral motif. The catalysts showed different reaction profiles in the asymmetric, intramolecularα-arylation of amides. The molecular structure of two N-heterocyclic and one nitrogen acyclic carbene palladium isonitrile complex
Synthesis of Different Classes of Six-Membered Gold(I) NHC Complexes by the Isonitrile Route
作者:Thomas Wurm、Florian Mulks、Constantin R. N. Böhling、Dominic Riedel、Poorya Zargaran、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1021/acs.organomet.6b00023
日期:2016.4.25
Different types of six-membered N-heterocyclic gold carbene complexes were prepared by using gold(I) isonitrile complexes as precursors in combination with suitably functionalized amines. The simple procedures provide an easy access to not only unsymmetrically substituted saturated carbene complexes but rarely reported types of carbene complexes such as six-membered N-heterocyclic oxo-carbene complexes, and six-membered partly unsaturated ligands can be obtained following the strategy.