Sibylle Frieß

Chiral Diarylamido (SO)-N-(SO) Sulfoxide Pincer Ligands

Only recently S-stereogenic sulfoxides have emerged as a versatile and encouraging novel class of ligands. Besides the proximity of the chiral information, located at the sulfur atom, to a ligated metal and thus to the reaction center, sulfoxides may switch between S and O coordination and bind to “hard” and “soft” metals, respectively. Combination of these attractive features of sulfoxides with the rigid, C₂-symmetric, T-shaped configuration of a pincer scaffold leads to a promising ligand system for asymmetric catalysis.

H. Locke, A. Herrera, F. W. Heinemann, A. Linden, S. Frieß, B. Schmid, R. Dorta; Chiral (SO)–N–(SO) Sulfoxide Pincer Complexes of Mg, Rh, and Ir: N–H Activation and Selective Sulfoxide Reduction upon Ligand Coordination, Organometallics, 2015, 34, 1925-1931

F. W. Seidel, S. Frieß, F. W. Heinemann, A. Chelouan, A. Scheurer, A. Grasruck, A. Herrera, R. Dorta, C₂-Symmetric (SO)N(SO) Sulfoxide Pincer Complexes of Mg and Pd: Helicity Switch by Ambidentate S/O-Coordination and Isolation of a Chiral Pd-Sulfenate, Organometallics, 2018, 37, 1160-1171