Base-Promoted, Remote C-H Activation at a Cationic (η⁵-C₅Me₅)Ir(III) Center Involving Reversible C-C Bond Formation of Bound C₅Me₅.

ABSTRACT: C-H bond activation at cationic [(η⁵-C₅Me₅)Ir(PMe₂Ar')] centers is described, where PMe₂Ar' are the terphenyl phosphine ligands PMe₂Ar^Xyl₂ and PMe₂Ar^Dipp₂. Different pathways are defined for the conversion of the five-coordinate complexes [(η⁵-C₅Me₅)IrCl(PMe₂Ar')]⁺, 2(Xyl)⁺ and 2(Dipp)⁺, into the corresponding pseudoallyls 3(Xyl)⁺ and 3(Dipp)⁺. In the absence of an external Brønsted base, electrophilic, remote ζ C-H activation takes place, for which the participation of dicationic species, [(η⁵-C₅Me₅)Ir(PMe₂Ar')]²⁺, is

SUBMITTER: Moreno JJ 

PROVIDER: S-EPMC6396953 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature