Palladium(II) and Nickel(II) Complexes Bearing N,N,O‐Chelate Ligands: Syntheses, Characterization and Catalysis in Heck and Kumada Coupling Reactions
作者:Zhong‐Xia Wang、Zuo‐Yun Chai
DOI:10.1002/ejic.200700347
日期:2007.10
5-Me2C3HN2)C5H3N]– (L1–) and [2-OC(Ph)=CH}-6-(3,5-Me2C3HN2)C5H3N]– (L2–), and their palladium and nickel complexes, were synthesized and characterized. 6-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-methylpyridine was lithiated with nBuLi and the lithiated product treated with benzophenone to give Li(L1) (2), whereas treatment of 2-[6-(3,5-dimethyl-1H-pyrazol-1-yl)pyridin-2-yl]-1-phenylethanone with NaH afforded Na(L2) (6)
两个新的阴离子配体,即[2-OC(Ph)2CH2}-6-(3,5-Me2C3HN2)C5H3N]-(L1-)和[2-OC(Ph)=CH}-6-(3 ,5-Me2C3HN2)C5H3N]– (L2–) 及其钯和镍配合物被合成和表征。6-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-methylpyridine 用 nBuLi 锂化,锂化产物用二苯甲酮处理得到 Li(L1) (2),而 2-[6- (3,5-二甲基-1H-吡唑-1-基)吡啶-2-基]-1-苯基乙酮与NaH提供Na(L2) (6)。钯和镍配合物 [(L1)PdCl] (3), [(L1)NiAr] [Ar = o-MeC6H4 (4a), 1-C10H7 (4b)], [(L2)PdCl] (7) 和 [ (L2)NiAr] [Ar = o-MeC6H4 (8a), 1-C10H7 (8b)] 是通过 Li(L1)