Abstract
Preparation and reactivity of chiral and achiral NCN pincer Fe complexes containing bis(oxazolinyl)phenyl (abbreviated as phebox) ligands with SnMe3, SiMe3, Me, and Ph ligands were investigated. Irradiation of (phebox)SnMe3 (2) with 1 equiv of Fe(CO)5 led to oxidative addition to give NCN pincer stannyl complex (phebox)Fe(CO)2(SnMe3) (3). Similarly, oxidative addition of (phebox)SiMe3 (4) with Fe(CO)5 resulted in the formation of silyl complex (phebox)Fe(CO)2SiMe3 (5). Me and Ph complexes (phebox)Fe(CO)2R (7, R = Me; 8, R = Ph) were synthesized by transmetalation of the bromide complex (phebox)Fe(CO)2Br (1) with ZnMe2 and ZnPh2, respectively. These phebox Fe complexes served as catalysts for hydrosilylation of a ketone and C–H silylation of N-methylindole.
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