G. S. Nyamato, S. O. Ojwach, M. Akerman
Nov 24, 2015
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0
Influential Citations
20
Citations
Journal
Organometallics
Abstract
The (imino)pyridine ligands bearing pendant arms 2-methoxy-N-(1-(pyridin-2-yl)ethylidene)ethanamine (L1), 2-methoxy-N-((pyridin-2-yl)methylene)ethanamine (L2), 3-methoxy-N-((pyridin-2-yl)methylene)propan-1-amine (L3), N,N-diethyl-N-((pyridin-2-yl)methylene)ethane-1,2-diamine (L4), and N-((6-bromopyridin-2-yl)methylene)-2-methoxyethanamine (L5) were synthesized by condensation of the appropriate aldehyde and the corresponding amines. Reactions of L1–L5 with [PdCl(Me)(cod)] afforded the corresponding palladium complexes [PdCl(Me)(L1)] (1), [PdCl(Me)(L2)] (2), [PdCl(Me)(L3)] (3), [PdCl(Me)(L4)] (4), and [PdCl(Me)(L5)] (5) in good yields. Treatment of the neutral complexes 1–5 with one molar equivalent of Na[BAr4] (Ar = 3,5-(CF3)2C6H3) led to in situ formation of the corresponding cationic compounds [Pd(Me)(L1)]+ (1a), [Pd(Me)(L2)]+ (2a), [Pd(Me)(L3)]+ (3a), [Pd(Me)(L4)]+ (4a), and [Pd(Me)(L5)]+ (5a). In the presence of ethylene, the catalyst systems 1–5/MAO and 1a–5a exhibited high catalytic activities in se...