Abstract
AbstractThe synthesis and an exemplary catalytic application of a SBA‐15‐supported rhodium–N‐heterocyclic carbene (NHC) complex is reported. In contrast to the conventional method of immobilization of unsaturated NHC complexes, the rhodium–NHC compound described here is connected to the SBA‐15 surface by a linker originating from the backbone of the unsaturated NHC ligand. The unique characteristics of the new immobilization mode enable the supported NHC complexes to maintain two unchanged “wing‐tip” ligands. This method of immobilization of unsaturated NHC complexes provides a new way to maintain the original configuration of homogeneous NHC complexes in the heterogenized catalytic system. The immobilized rhodium–NHC catalyst is used in a hydrogenation reaction with styrene as substrate.
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