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Asymmetric Pd-NHC*-catalyzed coupling reactions

Kündig, E. Peter ; Jia, Yixia ; Katayev, Dmitry ; Nakanishi, Masafumi

In: Pure and Applied Chemistry, 2012, vol. 84, no. 8, p. 1741-1748

Palladium complexes comprising C(4)-bound diimidazolylidene carbenes

Heckenroth, Marion ; Albrecht, Martin

In: Chimia, 2008, vol. 62, no. 4, p. 253-255

Imidazolium-derived palladium dicarbene complexes have been synthesized which feature either normal C(2) carbene bonding or abnormal C(4) bonding. Comparison of the reactivity of these complexes, in particular towards Lewis acids (H⁺, Ag⁺), indicate consistently that C(4)-bound carbenes are stronger donors than their C(2)-bound analogs. As a consequence of this electronic impact, palladium...