Intermolecular Hydroamination of 1,3-Dienes Catalyzed by Bis(phosphine)carbodicarbene–Rhodium Complexes

A carbodicarbene (CDC)-based pincer
ligand scaffold is reported,
along with its application to site-selective Rh­(I)-catalyzed intermolecular
hydroamination of 1,3-dienes with aryl and alkyl amines. To the best
of our knowledge, this is the first example of the use of a well-defined
CDC complex as an efficient catalyst. Transformations proceed in the
presence of 1.0–5.0 mol % Rh complex at 35–120 °C;
allylic amines are obtained in up to 97% yield and with >98:2 site
selectivity.