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1.4.11.3 Conclusions and Perspectives

DOI: 10.1055/sos-SD-223-00244

Kalck, P.; Urrutigoïty, M.Science of Synthesis: N-Heterocyclic Carbenes in Catalytic Organic Synthesis, (20161470.

Monocarbene–rhodium complexes of the type RhCl(NHC)(cod) efficiently catalyze the synthesis of a variety of amines through the hydroaminomethylation reaction. Starting from styrene, styrene derivatives, or alkenes, high rates of conversion and chemoselectivity are obtained. Classical regioselectivity, comparable to that achieved with phosphorus-containing ligands, is observed in the hydroformylation step. A significant increase in the regioselectivity in favor of the branched amine is achieved for styrene and its derivatives when using a rhodium bis(carbene) complex. Moreover, the immobilization of this latter catalytic system on magnetic particles allows its easy separation from the organic products and its recycling without loss of activity.

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