Fig. 5: Investigation for the reductive elimination of diorganoiridium complexes and elementary steps-cascaded cross-coupling reaction.
From: Persistent acyclic Cp*Ir(III) complexes and their reactivities in cross-coupling reactions
a Reductive elimination of diorganoiridium complexes. Reaction conditions: with a cell voltage of 3.7 V, diorganoiridium complex (0.10 mmol) and nBu4NPF6 (0.50 mmol) in MeCN (5.0 mL) under N2 at room temperature for 3 h. b CVs for diorganoiridium complex (0.1 M nBu4NPF6 in MeCN, 100 mV s−1). c Calculated energy profiles. d Tandem cross-coupling reactions. Reaction conditions: aAryl Cp*Ir(III)(CO)Cl complex (0.10 mmol), arylboronic acid (0.40 mmol), AgOAc (0.10 mmol) and K2CO3 (0.40 mmol) in TFE (1.0 mL) under N2 at 80 °C for 24 h. bAryl aldehyde (0.20 mmol), carboxylic acid (0.40 mmol), [Cp*IrCl2]2 (0.01 mmol), AgNTf2 (0.04 mmol), Ag2O (0.40 mmol) and NaOAc (0.20 mmol) in DCE (1.0 mL) under N2 at 130 °C for 24 h. Cp* pentamethylcyclopentadienyl, Me methyl, Ph phenyl, nBu n-butyl, TFE 2,2,2-Trifluoroethanol, DCE 1,2-dichloroethane.
